A website plans to purchase advertisements in a local newspaper. Their budget is $600, and they plan to run no more than 10 advertisements. An ad in the weekend edition is $75, and an ad in the weekday paper is $50.

Let x be equal to the number of weekend ads, and y be equal to the number of weekday ads. Excluding the boundary lines shown on the graph, place a point inside the region of the graph that satisfies the system.

A Website Plans To Purchase Advertisements In A Local Newspaper. Their Budget Is $600, And They Plan

Answers

Answer 1

Excluding the boundary lines shown on the graph, (4 , 6) is the required ordered pair inside the region of the graph satisfies the given system of linear equation.

The budget of a website to advertise in local newspaper is $600 , and they plan to run no more than 10 advertisements. An ad in the weekend edition is $75, and an ad in the weekday paper is $50.

Let  x be equal to the number of weekend ads, and y be equal to the number of weekday ads.

We can compute the point inside the region of the graph that satisfies the system of linear equations that can be formed as,

75x + 50y = 600 ___(1)

x + y = 10 ___(2)

Solving the system of linear equations in (1) and (2) as,

From equation (2), x= 10- y

Substituting x in equation (1) with x= 10- y, we get,

75( 10- y )+ 50y = 600

⇒ 750 - 75y + 50y = 600

⇒ 25y = 150

⇒ y = 6

Thus, x = 10 - 6 = 4

Hence (x, y) = (4 , 6) inside the region of the graph satisfies the given system of equation.

To know more about system of linear equations here

https://brainly.com/question/27664510

#SPJ1


Related Questions

A T-shirt stand on the boardwalk recently sold 6 purple shirts and 9 shirts in other colors. What is the experimental probability that the next shirt sold will be purple?
Write your answer as a fraction or whole number.

Answers

The experimental probability that the next shirt sold will be purple is [tex]2/5[/tex].

What is experimental probability on purple shirt?

The experimental probability means ratio of the number of times the event occurs to the total number of trials or observations.

In this case, the event is the sale of a purple shirt and the trials are the total number of shirts sold.

So, total number of shirts sold is:

= 6 purple shirts + 9 other color shirts

= 15 shirts

The number of purple shirts sold is 6.

The experimental probability of selling a purple shirt on the next sale will be:

= Number of purple shirts sold / Total number of shirts sold

= 6 / 15

= 2 / 5.

Read more about experimental probability

brainly.com/question/8652467

#SPJ1

Refer to Exercise 9.38(b). Under the conditions outlined there, find the MLE of σ 2.
Reference
Let Y1 , Y2, . . . , Yn denote a random sample from a normal distribution with mean μ and variance σ 2.

Answers

In exercise 9.38(b), we are given a random sample Y1, Y2, ..., Yn from a normal distribution with mean μ and unknown variance σ^2. The likelihood function for this sample is:

L(μ, σ^2) = (2πσ^2)^(-n/2) exp[-∑(Yi-μ)^2/(2σ^2)]

To find the maximum likelihood estimator (MLE) of σ^2, we need to maximize the likelihood function with respect to σ^2 while holding μ constant. Taking the natural logarithm of the likelihood function and simplifying, we get:

ln L(μ, σ^2) = -n/2 ln(2π) - n/2 ln(σ^2) - ∑(Yi-μ)^2/(2σ^2)

Differentiating this expression with respect to σ^2 and setting the derivative equal to zero, we obtain:

d/dσ^2 ln L(μ, σ^2) = -n/(2σ^2) + ∑(Yi-μ)^2/(2σ^4) = 0

Solving for σ^2, we get:

σ^2 = ∑(Yi-μ)^2/n

Therefore, the MLE of σ^2 is the sample variance s^2 = ∑(Yi-ȳ)^2/(n-1), where ȳ is the sample mean. This is a well-known result in statistics and is based on the fact that the sample variance is an unbiased estimator of the population variance.

In conclusion, under the given conditions, the MLE of σ^2 is the sample variance s^2. This result is intuitive and makes sense since the sample variance is a natural estimator of the population variance based on the observed data. The normal distribution assumption is crucial for this result, as it allows us to derive the likelihood function and use maximum likelihood estimation to find the MLE of σ^2.

More on normal distribution : https://brainly.com/question/4079902

#SPJ11

(10 Points) Let X and Y be identically distributed independent random variables such that the moment generating function of X + Y is Mx+y(t) = 0.09e^-2t + 0.24e^t + 0.34 + 0.24e^t + 0.09e^2t, -oo < t < oo.
Compute the probability P(X ≤ 0)

Answers

The second derivative with respect to t and evaluating it at t=0, we get the variance:

Var(X+Y) = Mx+y''(0) - [Mx+y'(0)]^2 = [-0.18(4e^-2t) + 0

Since X and Y are identically distributed, we can write the moment generating function of X as Mx(t) and that of Y as My(t).

Since X and Y are independent, the moment generating function of X + Y is given by the product of their individual moment generating functions:

Mx+y(t) = Mx(t)My(t)

We are given the moment generating function of X + Y as:

Mx+y(t) = 0.09e^-2t + 0.24e^t + 0.34 + 0.24e^t + 0.09e^2t

We can rewrite this as:

Mx+y(t) = 0.09(e^-2t + e^2t) + 0.48e^t + 0.34

Comparing this to the moment generating function of a normal distribution with mean 0 and variance σ^2, which is given by:

M(t) = e^(μt + σ^2t^2/2)

We see that the moment generating function of X + Y is that of a normal distribution with mean 0 and variance σ^2 = 1/2.

Thus, X + Y ~ N(0, 1/2).

Since X and Y are identically distributed, X ~ N(0, 1/4) and Y ~ N(0, 1/4).

Therefore,

P(X ≤ 0) = P(X - Y ≤ -Y) = P(Z ≤ -Y/√(1/2)),

where Z ~ N(0,1).

Since X and Y are identically distributed, we have

P(X - Y ≤ -Y) = P(Y - X ≤ X) = P(-Y + X ≤ X) = P(X ≤ Y)

So,

P(X ≤ 0) = P(X ≤ Y) = P(X - Y ≤ 0)

= P[(X+Y) - 2Y ≤ 0]

= P[Z ≤ 2(Y - X)/√2]

where Z ~ N(0,1).

Now, let's find the mean and variance of X + Y:

E[X + Y] = E[X] + E[Y] = 2E[X]

Since X and Y are identically distributed, we have E[X] = E[Y].

Thus, E[X + Y] = 2E[X] = 2E[Y]

And,

Var(X + Y) = Var(X) + Var(Y) = 2Var(X)

Since X and Y are identically distributed, we have Var(X) = Var(Y).

Thus, Var(X + Y) = 2Var(X)

Using the moment generating function of X + Y, we can find its mean and variance as follows:

Mx+y(t) = E[e^(t(X+Y))]

Taking the first derivative  with respect to t and evaluating it at t=0, we get the mean:

E[X+Y] = Mx+y'(0) = [0.09(-2e^-2t) + 0.48e^t + 0.24e^t + 0.18(2e^2t)]|t=0

= -0.18 + 0.24 + 0.18 = 0.24

Taking the second derivative with respect to t and evaluating it at t=0, we get the variance:

Var(X+Y) = Mx+y''(0) - [Mx+y'(0)]^2 = [-0.18(4e^-2t) + 0.

To learn more about Comparing visit:

https://brainly.com/question/29467965

#SPJ11

What are examples for Algebraic Multigrid Method linear.system

Answers

Examples of Algebraic Multigrid Method (AMG) applied to linear systems include solving partial differential equations (PDEs) such as Poisson's equation and the Helmholtz equation, as well as computational fluid dynamics (CFD) problems.

The Algebraic Multigrid Method is an advanced iterative technique for solving large, sparse linear systems that arise from the discretization of PDEs or from CFD problems. It uses a hierarchy of grids to represent the problem at different scales, and employs smoothing and restriction operations to improve the convergence rate.

AMG is particularly effective in solving elliptic PDEs like Poisson's equation and the Helmholtz equation, which are commonly encountered in engineering and scientific simulations.Algebraic Multigrid Method is a powerful technique for solving large-scale linear systems, with applications in solving PDEs and CFD problems.

To know more about Poisson's equation visit:

https://brainly.com/question/30465210

#SPJ11

find the lengths of the diagonals, do not round

lower left to upper right: ?
lower right to upper left?

using the lengths of the diagonals, is the trapezoid isosceles?

Answers

The lengths of the diagonals in the isosceles trapezoid are 11.045 units and 7.2 units.

From the given figure, the vertices of the quadrilateral are (1, 6), (3, 0), (-5, 0) and (-1, 6).

From lower left to upper right: (-5, 0) and (1, 6)

Here, length = √(6+5)²+(1-0)²

= √122

= 11.045 units

From lower right to upper left: (3, 0) and (-1, 6)

Here, length = √(-1-3)²+(6-0)²

= √52

= 7.2 units

Therefore, the lengths of the diagonals in the isosceles trapezoid are 11.045 units and 7.2 units.

To learn more about the distance formula visit:

brainly.com/question/27262878.

#SPJ1

You spent these amounts on gasoline for the past four months: $67, $78, $53, $89.

What should you budget for gasoline this month?

Answers

Answer:

$71.75

Rounded : $72

Step-by-step explanation:

To budget for gasoline this month, you can calculate the average amount spent on gasoline over the past four months:

Average = (67 + 78 + 53 + 89) / 4 = amount you should budget (x)

Average = 287 / 4 = x

71.75 = x

(Answer Rounded if that’s what you need but you didn’t ask: $72)

Therefore, you should budget around $71.75 or $ 72 for gasoline this month, assuming your driving habits and gas prices remain relatively constant. However, keep in mind that unexpected changes in gas prices or driving habits may affect your actual spending.

The budget would be $71.25 but $72 if rounded because
If you add all the totals to get the total expense it would be $287 divided by 4 to get the average is 287/4= $71.25

for an integer $n$, the inequality \[x^2 nx 15 < 0\]has no real solutions in $x$. find the number of different possible values of $n$.

Answers

To solve this problem, we need to understand the conditions under which the inequality $x^2 nx 15 < 0$ has no real solutions. This inequality can be rewritten as $nx(x-15/n) < 0$, which tells us that either $n>0$ and $x<0$ or $x>15/n$, or $n<0$ and $x>0$ or $x<15/n$.

In either case, we have a product of two factors that must be negative, which means that either both factors are negative or both factors are positive.
Since we are looking for the number of different possible values of $n$, we need to consider all possible combinations of signs for $n$ and $x-15/n$. If $n>0$, then $x-15/n$ must also be positive, which means that $x>15/n$. If $n<0$, then $x-15/n$ must be negative, which means that $x<15/n$. In either case, we can see that $n$ must be either positive or negative, and that there is only one possible value of $n$ that satisfies the given condition: $n = \frac{15}{x^2}$.

To find the number of different possible values of $n$, we need to consider all possible values of $x$. If $x=0$, then the inequality is trivially true for any value of $n$. If $x\neq 0$, then we can see that $n$ can take any value in the interval $(0,\infty)$ or $(-\infty,0)$, which means that there are infinitely many possible values of $n$ that satisfy the given condition.

Therefore, the answer to the question is that there are infinitely many different possible values of $n$.
To find the number of different possible values of $n$ for which the inequality $x^2 + nx + 15 < 0$ has no real solutions in $x$, we first need to analyze the inequality.

Step 1: Find the discriminant of the quadratic inequality.
The discriminant, $D$, is given by the formula $D = b^2 - 4ac$, where $a$, $b$, and $c$ are the coefficients of the quadratic expression. In this case, $a = 1$, $b = n$, and $c = 15$.

So, $D = n^2 - 4(1)(15) = n^2 - 60$.

Step 2: Determine the condition for the inequality to have no real solutions.
For a quadratic inequality to have no real solutions, the parabola must not intersect the x-axis, which means the discriminant must be less than 0.

So, we need to solve the inequality $D < 0$:

$n^2 - 60 < 0$

Step 3: Solve the inequality for $n$.
To solve the inequality, find the range of values of $n$ that satisfy the inequality.

$(n - \sqrt{60})(n + \sqrt{60}) < 0$

Since $\sqrt{60}$ is between 7 and 8, we can rewrite the inequality as:

$-8 < n < 8$

Step 4: Count the number of possible integer values of $n$.
The inequality indicates that $n$ must be an integer between -8 and 8 (not inclusive). Therefore, the possible values of $n$ are -7, -6, -5, -4, -3, -2, -1, 1, 2, 3, 4, 5, 6, and 7.

There are 14 different possible values of $n$ for which the inequality $x^2 + nx + 15 < 0$ has no real solutions in $x$.

Learn more about coefficients at : brainly.com/question/22241464

#SPJ11

On Friday, Daniel wrote a check for $158. The following Monday he deposited $60 into his bank account. On
Wednesday the bank informed him that he had overdrawn his account by $8. If Daniel made no other
transactions between Friday and Wednesday, what was his balance before he wrote the check on Friday?

Answers

Daniel's balance before he wrote the check on Friday was $248.

What was Daniel's balance before he wrote the check on Friday?

To solve this problem, we can start by subtracting the $60 deposit from the $158 check, which gives us a balance of $98 before the check was cashed.

Since the account was overdrawn by $8 on Wednesday, we can subtract $8 from the balance to get $90.

Finally, we must add back the $158 check that was cashed which will give a balance of:

= $158 + $90

= $248

Read more about balance

brainly.com/question/1403056

#SPJ1

Solve for length of segment b. 6 cm 4 cm 3 International Academy of Science. All Rights Reserved. Search b 18 cm b = [?] cm If two segments intersect inside or outside a circle: ab = cd Enter​

Answers

The needed, following the property of intersecting chords, length of segment b is 2 cm,

To find the length of segment b, we need to use the property of intersecting chords inside or outside a circle, which states that the product of the two segments of each chord is equal.

Given that:

ab = 6 cm

cd = 4 cm

ac = 3 cm

bd = b cm (length of segment b, to be found)

The property states:

ab * bd = cd * ac

Substitute the given values:

6 cm * b cm = 4 cm * 3 cm

Now, solve for b:

6b = 12

Divide both sides by 6 to isolate variable b:

b = 12 / 6

b = 2 cm

So, the length of segment b is 2 cm.

Learn more about chords here:

https://brainly.com/question/31162496

#SPJ12

the amount of sugar in billy's kitchen is directly proportional to the number of cookies he can bake. the number of cookies that billy bakes is inversely proportional to a score of his physical health (since he eats all the cookies). by what percent will billy's health score go down if his sugar resources are quadrupled?

Answers

Billy's health score go down  by 75% if his sugar resources are quadrupled

Let the amount of sugar in Billy's kitchen be denoted by S and the number of cookies he can bake be denoted by C. Let his health score be denoted by H. Then we have the following relationships:

C ∝ S (directly proportional)

C ∝ 1/H (inversely proportional)

Combining these two relationships, we get:

C ∝ S/H

If S is quadrupled, then C will also quadruple according to the first relationship. However, H will decrease by some percentage x according to the second relationship. To find x, we can use the fact that C is proportional to S/H:

C = k*S/H

where k is a constant of proportionality. If S is quadrupled, then C will also quadruple, so we have:

4C = k4S/H

C = kS/(H/4)

This tells us that if S is quadrupled, then C will be divided by H/4. In other words, C/H will be divided by 4. So, the percentage decrease in H can be found as follows:

C/H → (C/H)/4 = (S/H)/(4/k) → x = 100%*(1 - 1/4) = 75%

Therefore, if Billy's sugar resources are quadrupled, his health score will go down by 75%.

Learn more about cookies at https://brainly.com/question/3819406

#SPJ11

Isabella has $0.50 worth of nickels and dimes. She has a total of 7 nickels and dimes
altogether. By following the steps below, determine the number of nickels, x, and the
number of dimes, y, that Isabella has.
Determine three ways to have a total of 7 coins:


Pls help

Answers

Five nickels plus two dimes totaling

combining for a sum of $0.45.

three nickels and four dimes respectively

combining for a sum of $0.55.

two nickels and five dimes denoting x = 2, y = 5

combining for a sum of $0.60.

How to determine three ways to have a total of 7 coins

3 ways to achieve a total of 7 coins with nickels (N) and dimes (D), and their corresponding values are

Five nickels plus two dimes totaling x = 5, y = 2 respectively. The value of five nickels = $0.25

two dimes = $0.20

combining for a sum of $0.45.

three nickels and four dimes respectively depositing x = 3, y = 4

3 nickels = $0.15

4 dimes = $0.40

combining for a sum of $0.55.

two nickels and five dimes denoting x = 2, y = 5

2 nickels = $0.10

5 dimes = $0.50

combining for a sum of $0.60.

Learn more about nickels and dimes at

https://brainly.com/question/24342899

#SPJ1

A cone and a sphere have the same volume. The height of the cone is 96 units.
What could be the values for the radius of the cone and the sphere? Round your answers to the nearest hundredth
as needed.

Answers

[tex]\textit{volume of a cone}\\\\ V=\cfrac{\pi r^2 h}{3}~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ h=96 \end{cases}\implies V=\cfrac{\pi r^2 (96)}{3} \\\\[-0.35em] ~\dotfill\\\\ \textit{volume of a sphere}\\\\ V=\cfrac{4\pi r^3}{3}~~\hspace{9em}\stackrel{\textit{since we know both Volumes are equal}}{\cfrac{4\pi r^3}{3}~~ = ~~\cfrac{\pi r^2 (96)}{3}}[/tex]

[tex]4\pi r^3=\pi r^2(96)\implies 4\pi r^2\cdot r=\pi r^2(96)\implies r=\cfrac{\pi r^2(96)}{4\pi r^2}\implies \boxed{r=24} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \stackrel{ \textit{\LARGE cone} }{\cfrac{\pi (24)^2(96)}{3}}\implies \stackrel{ \textit{\LARGE sphere} }{\cfrac{4\pi (24)^3}{3}}\implies18432\pi ~~ \approx ~~ \text{\LARGE 57905.84}~units^3[/tex]

an instructor has given a short quiz consisting of two parts. for a randomly selected student, let x 5 the number of points earned on the first part and y 5 the number of points earned on the second part. suppose that the joint pmf of x and y is given in the accompanying table. y p(x, y) 0 5 10 15 0 .02 .06 .02 .10 x 5 .04 .15 .20 .10 10 .01 .15 .14 .01 a. if the score recorded in the grade book is the total number of points earned on the two parts, what is the expected recorded score e(x 1 y)? b. if the maximum of the two scores is recorded, what is the expected recorded score?

Answers

a. If the score recorded in the grade book is the total number of points earned on the two parts,  the expected recorded score e(x 1 y) is 11.6.

b.  If the maximum of the two scores is recorded, the expected recorded score 10.08.

a) The expected recorded score is given by:

e(x + y) = ΣΣ(x + y) * p(x, y)

So, we have:

e(x + y) = (0+0)*0.02 + (5+0)*0.04 + (10+0)*0.06 + (15+0)*0.02 + (5+10)*0.15 + (10+10)*0.20 + (15+10)*0.15 + (5+15)*0.01 + (10+15)*0.14 + (15+15)*0.01

Simplifying:

e(x + y) = 0.02(0 + 0) + 0.04(5 + 0) + 0.06(10 + 0) + 0.02(15 + 0) + 0.15(5 + 10) + 0.20(10 + 10) + 0.15(15 + 10) + 0.01(5 + 15) + 0.14(10 + 15) + 0.01(15 + 15)

e(x + y) = 11.6

So, the expected recorded score is 11.6.

b) The expected recorded score if the maximum of the two scores is recorded is given by:

e(max(x, y)) = ΣΣ(max(x, y)) * p(x, y)

So, we have:

e(max(x, y)) = max(0, 5)*0.06 + max(5, 0)*0.04 + max(10, 0)*0.06 + max(15, 0)*0.02 + max(5, 10)*0.15 + max(10, 10)*0.20 + max(15, 10)*0.15 + max(5, 15)*0.01 + max(10, 15)*0.14 + max(15, 15)*0.01

Simplifying:

e(max(x, y)) = 0.065 + 0.045 + 0.0610 + 0.0215 + 0.1510 + 0.2010 + 0.1515 + 0.0115 + 0.1415 + 0.0115

e(max(x, y)) = 10.08

So, the expected recorded score is 10.08.

Learn more about covariance here:

https://brainly.com/question/31009899

#SPJ11

Suppose you are in a civil club that has 85 total members. The 85 members were asked on a recent survey if they would like to hold a charity event to benefit a certain city memorial statue. If 80 members said yes, calculate the population proportion of members who favor holding the charity event. Show all work. (2 pts)

Answers

The population proportion of members who favor holding the charity event in the civil club is approximately 94.12%. To calculate the population proportion of members in the civil club who favor holding the charity event, follow these steps:


The population proportion of members who favor holding the charity event can be calculated by dividing the number of members who said yes by the total number of members in the club.Proportion = Number of members who said yes / Total number of members in the club
Step:1. Identify the total number of members in the civil club: 85 members.
Step:2. Identify the number of members who said yes to holding the charity event: 80 members.
Step:3. Divide the number of members who said yes by the total number of members: 80 / 85.
Step:4. Convert the result to a percentage by multiplying by 100: (80 / 85) x 100.
So, the population proportion of members who favor holding the charity event in the civil club is approximately (80 / 85) x 100 = 94.12%.

Learn more about population proportion here, https://brainly.com/question/29516589

#SPJ11

Let f and g be real-valued functions on R^2. Prove that df ^ dg = |df/dx df/dy| dxdy.|dg/dx dg/dy|

Answers

To prove that df ^ dg = |df/dx df/dy| dxdy.|dg/dx dg/dy|, we can start by expanding the expression for the exterior product of the differentials df and dg.

df ^ dg = (df/dx dx + df/dy dy) ^ (dg/dx dx + dg/dy dy)

Using the distributive property of the exterior product, we can expand this expression as:

df ^ dg = (df/dx dx) ^ (dg/dx dx) + (df/dx dx) ^ (dg/dy dy) + (df/dy dy) ^ (dg/dx dx) + (df/dy dy) ^ (dg/dy dy)

Now, we can use the fact that the exterior product of two parallel vectors is zero, which means that (dx) ^ (dx) = (dy) ^ (dy) = 0. This allows us to simplify the expression as:

df ^ dg = (df/dx df/dy dy ^ dx) ^ (dg/dx dg/dy dy ^ dx)

Since dy ^ dx = -dx ^ dy, we can further simplify the expression as:

df ^ dg = -|df/dx df/dy| dx ^ dy ^ (dg/dx dg/dy) dx ^ dy

Now, we can use the fact that dx ^ dy = -dy ^ dx, which means that (dx ^ dy) ^ (dx ^ dy) = 0. This allows us to simplify the expression as:

df ^ dg = -|df/dx df/dy dg/dx dg/dy| (dx ^ dy) ^ (dx ^ dy)

Since (dx ^ dy) ^ (dx ^ dy) = 0, we can conclude that:

df ^ dg = 0

Therefore, we have proven that df ^ dg = |df/dx df/dy| dxdy.|dg/dx dg/dy|.

distributive propertyhttps://brainly.com/question/739920

#SPJ11

complete the division equation. How many times does jack need to fill the glass?

Answers

Answer:

Alot

Step-by-step explanation:

Think abt it

an experiment contestar of the stages. There are two posible outcomen in the three to those pound outcomes in a second days, und ti his com es * tot sag. The uns vorm of outcomes of this experimentis O a 24 O b. 26 Oc9 Od 18 Activate Windows

Answers

Hi! It seems like your question might be about calculating the possible outcomes in an experiment. Based on the terms provided, I'll try my best to help you.

In an experiment with stages, the possible outcomes can be calculated using the multiplication principle. If there are two possible outcomes in the first stage and three possible outcomes in the second stage, you can multiply these numbers to find the total possible outcomes.

Total outcomes = (Outcomes in stage 1) x (Outcomes in stage 2)

Total outcomes = 2 x 3 = 6

Based on the given options, none of them match the calculated total outcomes.

Learn more about possible outcomes: https://brainly.com/question/25688842

#SPJ11

A satellite is in the shape of a cylinder with two hemispheres fitted snugly on either end. If the diameter of the cylinder is 2 m and its length is 12 m, find the volume of the satellite. Express the answer in terms of pi

Answers

The volume of the satellite is,

⇒ V = 12π m³

Given that;

A satellite is in the shape of a cylinder with two hemispheres fitted snugly on either end.

And, The diameter of the cylinder is 2 m and its length is 12 m.

Now, We know that;

Volume of cylinder = πr²h

Hence, We get;

The volume of the satellite is,

⇒ V = π × (2/2)² × 12

⇒ V = 12π m³

Thus, The volume of the satellite is,

⇒ V = 12π m³

Learn more about the multiplication visit:

https://brainly.com/question/10873737

#SPJ1

(Note: click on Question to enlarge) Find the number of integer(s) x such that x^2 < 10x – 21.

Answers

To find the number of integers x such that x^2 < 10x – 21, follow these steps:

1. Rearrange the inequality to have all terms on one side:
x^2 - 10x + 21 < 0

2. Factor the quadratic expression:
(x - 7)(x - 3) < 0

3. Determine the critical points by finding the zeros of the factors:
x - 7 = 0 => x = 7
x - 3 = 0 => x = 3

4. Create intervals based on the critical points:
(-∞, 3), (3, 7), and (7, ∞)

5. Test a number from each interval in the inequality (x - 7)(x - 3) < 0:

- Interval (-∞, 3): Choose x = 2, (2 - 7)(2 - 3) = 5 * -1 < 0, interval is valid
- Interval (3, 7): Choose x = 4, (4 - 7)(4 - 3) = -3 * 1 > 0, interval is not valid
- Interval (7, ∞): Choose x = 8, (8 - 7)(8 - 3) = 1 * 5 > 0, interval is not valid

6. Count the integers in the valid interval (-∞, 3):
There are 3 integers in the interval (-∞, 3): 1, 2, and 3.

Therefore, there are 3 integers x such that x^2 < 10x - 21.

https://brainly.com/question/30181555

#SPJ11

Rewrite the function f(x)= 1 5 1 4 x 2 in the form f(x)=a(b)x.

Answers

Answer:

There seems to be some missing or incorrect information in the question. The given function f(x) = 1 5 1 4 x 2 is not well-formed and cannot be rewritten in the form f(x) = a(b)x. Please provide additional information or corrections to the question.

Step-by-step explanation:

Let X1, ..., Xy be independent random variables. Prove the following statements: (a) If for each i = 1,2...,N one has P|X1|<∂) ≤∂ for all ∂ ∈ (0,1), then N
P( Σ |Xi| εN) ≤ (2eε)^N, ε > 0. i = 1
(b) If for each i = 1,..., N one has P|X1|<∂) ≤∂ for some ∂ ∈ (0,1), N
P( Σ |Xi| < ∂N) ≥ ∂^N
i=1

Answers

(a) Letting X1, ..., Xy be independent random variables and Using the union bound, we have P(|X1| + ... + |XN| ≥ t) ≤ P(|X1| ≥ t/N) + ... + P(|XN| ≥ t/N) ≤ 2N[tex]e^{(-tε/N)}[/tex] for all t > 0.

(b) Using the assumption that P(|Xi| < ∂) ≤ ∂ for some ∂ ∈ (0,1), we have P(Σ|Xi| < ∂N) ≥ 1 - NP(|Xi| ≥ ∂N) ≥ 1 - (1 - ∂)[tex]e^N[/tex].

Setting t = 2N[tex]e^ε[/tex], we obtain

P(|X1| + ... + |XN| ≥ 2Ne**ε) ≤ e**(-ε)

which is equivalent to

P(|X1| + ... + |XN| < 2Ne**ε) ≥ 1 - e**(-ε).

By setting ∂ = 2Ne**ε/N, we get

P(Σ|Xi| < ∂) ≥ 1 - e**(-ε), and therefore,

NP(Σ|Xi| < ∂) ≥ N(1 - e**(-ε)) ≥ Nε for ε > 0.

Using the inequality (1 - x) ≤ e**(-x) for x > 0, we get (1 - ∂)**N ≤ e**(-N∂), and therefore, P(Σ|Xi| < ∂N) ≥ 1 - e**(-N∂) ≥ ∂**N.

Thus, we have shown that NP(Σ|Xi| < ∂N) ≥ ∂**N for some ∂ ∈ (0,1) and P(|X1| + ... + |XN| ≥ t) ≤ P(|X1| ≥ t/N) + ... + P(|XN| ≥ t/N) ≤ 2N[tex]e^{(-tε/N)}[/tex] for all t > 0

Learn more about random variables

https://brainly.com/question/14356285

#SPJ4

Volume of 2 cylinders is same but raidus of cylinder 1 is 10% more than cylinder 1

Answers

The height of the second cylinder should be 56.25% greater than the height of the first cylinder. (Option 1)

Let's assume the radius of the first cylinder to be 'r' and its height to be 'h'. So, its volume can be represented as V1 = πr^2h.

For the second cylinder, the radius of the base is 20% less than that of the first cylinder. So, the radius of the second cylinder can be represented as 0.8r. Let the height of the second cylinder be represented as 'H'. So, its volume can be represented as V2 = π(0.8r)²H.

As both cylinders have the same volume, we can equate the above two equations.

πr²h = π(0.8r)²H

h = (0.8)²H

H = (1/(0.8)²)h

H = (1.5625)h

Therefore, the height of the second cylinder should be 56.25% greater than the height of the first cylinder.

Learn more about cylinders

https://brainly.com/question/27535498

#SPJ4

Complete Question:

Two cylinders have the same volume, but the radius of the base of the second cylinder is 20% less than the radius of the base of the first. How much greater should be the height of the second cylinder be in comparison to the height in first?

Options:

56.25%55.25%56.75%55.75%.

Find the value of sin
C rounded to the nearest hundredth, if necessary

Answers

From the trigonometric ratios, the value of sine trigonometric ratio for angle C, i.e., sin(C) in above right angled triangle CDE, is equals to the 0.55.

Trigonometry is a branch of mathematics. The trigonometric ratios are special measurements of a right triangle the right angle trigonometric ratios, these ratios describe the relationship between the sides and angles in a right triangle. The six trigonometric ratios in a right angled triangle are defined as sine, cosine, tangent, cosecant, secant, and cotangent. The symbols used for them are sin, cos, sec, tan, csc, cot. The three main ratios are defined as below

[tex]sin = \frac{opposite}{hypotenuse}[/tex][tex]cos = \frac{adjacent}{hypotenuse}[/tex][tex]tan = \frac{opposite }{ adjacent}[/tex]

We have a right angled triangle CDE with 90° measure of angle D present in above figure. We have to determine the value of sine angle of C. Consider angle C priority,

Height or opposite of triangle = 11

Length of hypotenuse of triangle = 20

Using the above formula for sine trigonometric ratio, [tex]sin \: C = \frac{opposite}{hypotenuse}[/tex]

Substitute all known values in above formula, [tex]= \frac{11}{20}[/tex]

= 0.55

Hence, required value is 0.55.

For more information about trigonometric ratios, visit:

https://brainly.com/question/13276558

#SPJ4

Complete question :

The above figure complete the question.

Find the value of sin C rounded to the nearest hundredth, if necessary.

20

E

11

D

Help PLEASE

A cylinder has a volume of 1 and two ninths in3 and a radius of one third in. What is the height of a cylinder? Approximate using pi equals 22 over 7.

7 twelfths inches
7 sixths inches
7 fourths inches
7 halves inches

Answers

The height of the cylinder is 7/2 inches.

What is the volume of the cylinder?

Remember that for a cylinder of radius R and height H, the volume is:

V = pi*R²*H

Where pi = 22/7

We know that:

R = (1/3) in

V = (1 + 2/9) in³ = 11/9 in³

Replacing these values we will get:

11/9  = (22/7)*(1/3)²*H

11/9 = (22/7)*(1/9)*H

11 =(22/7)*H

11*(7/22) = H

7/2 = H

The answer is 7 halves inches.

Learn more about cylinders at:

https://brainly.com/question/9554871

#SPJ1

row equivalent matrix method
4x-3y=11
3x+7y=-1​

Answers

To solve the system of linear equations using the row echelon method, we start by writing the augmented matrix:

[4 -3 11 | 0]
[3 7 -1 | 0]

We want to eliminate the x-coefficient in the second row. To do this, we subtract 3/4 times the first row from the second row:

[4 -3 11 | 0]
[0 25/4 -25/4 | 0]

Next, we want to eliminate the y-coefficient in the first row. To do this, we add 3/4 times the second row to the first row:

[4 0 1 | 0]
[0 25/4 -25/4 | 0]

Now we have a triangular matrix, which we can solve by back substitution. From the second row, we get:

25/4*y = 25/4

y = 1

Substituting y = 1 into the first row, we get:

4x = -1

x = -1/4

Therefore, the solution to the system of linear equations is:

x = -1/4, y = 1.

the total surface area of North america is a approximately 9, 540., 000 square miles. write this number in Scientific notation.​

Answers

Writing the total surface area of North America, which is approximately 9,540,000 square miles in Scientific Notation, is 9.54 x 10^6.

What is scientific notation?

Scientific notation is shorthand way of writing very large or very small numbers in a standard form.

A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10.

For instance, 9,540,000 square miles can be written in scientific notation as 9.54 x 10^6 square miles.

Thus, we can state that, in scientific notation, 9,540,000 square miles equal 9.54 x 10^6 square miles.

Learn more about scientific notations at brainly.com/answer expert verified.

#SPJ1

Suppose that the amount of time that students spend studying in the library in one sitting is normally distributed with mean 46 minutes and standard deviation 19 minutes. A researcher observed 50 students who entered the library to study. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N (_____,_____)

Answers

The amount of time that students spend studying in the library in one sitting is normally distributed with a mean of 46 minutes and a standard deviation of 19 minutes. Hence the distribution of X is X ~ N (46, 19).

The amount of time students spend studying in the library in one sitting is normally distributed with a mean of 46 minutes and a standard deviation of 19 minutes. To represent the distribution of X, you can use the notation X ~ N (mean, standard deviation). In this case, X represents the time students spend studying in the library.Here mean =46 and standard deviation = 19Therefore the answer is X ~ N (46, 19)

know more about mean and standard deviation here: https://brainly.com/question/26941429

#SPJ11

Select the reason that best supports Statement 6 in the given proof.
A. Transitive Property
B. Substitution
C. Addition Property of Equality
D. Subtraction Property of Equality

Answers

Answer:

Step-by-step explanation:

Question 6 of 10
The circle below is centered at the point (5, 3) and has a radius of length 4.
What is its equation?
5-
5
10
O A. (x-3)2 + (y- 5)² = 16
OB. (x+3)2 + (y + 5)² = 16
O C. (x-5)² + (y - 3)² = 16
O D. (x + 5)2 + (y+ 3)² = 16

Answers

The correct option is:

O C. (x-5)² + (y - 3)² = 16

Problem Solving

Mathematical

5. PRACTICE

Justify Conclusions One side of a square is

10 units. Which is greater, the number of square units for the area of the square or the number of units for the perimeter? Explain. What is the answer???

Answers

The perimeter of the square is greater than its area.

We have,

The area of a square is given by the formula A = s²,

where s is the length of one side of the square.

The perimeter is given by the formula P = 4s,

where s is the length of one side of the square.

In our case,

The length of one side of the square is 10 units.

So,

Area = s² = 10² = 100 square units

Perimeter = 4s = 4(10) = 40 units

We can see that the perimeter of the square (40 units) is greater than the area of the square (100 square units).

This makes sense because the perimeter is measuring the total distance around the square, while the area is measuring the amount of space inside the square.

To explain why the perimeter is greater than the area, we can imagine that we are trying to measure the perimeter of the square by walking around its edge, while we are trying to measure the area of the square by filling it with small square tiles.

We can see that we would need more tiles to fill the space inside the square than we would need to walk around its edge, which explains why the area is smaller than the perimeter.

Therefore,

The perimeter of the square is greater than its area.

Learn more about squares here:

https://brainly.com/question/22964077

#SPJ1

Other Questions
Kenji is getting ready to do his taxes. He is single and lives in San Diego. Kenji earned $200,000 in 2011. He reviews the following table, which shows the IRS tax rates for a single taxpayer in 2011.Based on the IRS table, Kenji calculates that his marginal tax rate is _______________ Correct when his annual income is $200,000.a. 10%b. 15%c. 25%d. 28%e. 33%f. 35% What role does the law of supply and demand play in a command economy?Group of answer choicesThe law of supply and demand applies to a command economy as much as it does to other economies.The law of supply and demand functions the same way as in other economies, but the government sets the prices.The law of supply and demand does not apply because in a command economy, the government controls the market.The law of supply and demand functions in reverse because a command economy is the opposite of a market economy Clients may develop this condition after some types of surgery and when using certain drugs, especially narcotics.Cirrhosis GERDCholecystitisCrohnsDiverticulitis HepatitisUlcerative colitis Pancreatitis Intestinal obstructionPeptic Ulcer Orange Co bought $10,000 7%, 4-year bonds on Jan. I from Kumquat Co. when the market rate was 5%. Interest is paid semiannually on Jun 30 and Dec. 31. Orange Co. plans to hold these bonds until maturity because they want to receive all of the interest payments. At 1/1/X1, the bonds were trading at $10,717. At 1/1/X5, the bonds were trading at $9,757. Record the necessary entries at the given dates. SHOW ALL WORK! 1/1/XI 6/30/X1 12/31/X1 6/30/22 //X5 Now, assume that the bonds were called at 1/1/X3 at 105. In the context of the text, how the does the article explore the costs and benefits of technology? Do you think new technology can reverse the damage done by past technology? Why or why not? Cite evidence from this text, your own experience, and other literature, art, or history in your answer. Which set of ordered pairs gives the polygon shown?(-4.2), (-4, -5), (1.5, -5), (1.5, 2)(1.5, 2), (1.5, -4.5), (-4.5, -4), (2, -4)(-4, -4.5), (-4.5, 1.5), (1.5, 2), (-4, 2)(1.5, -4.5), (-4, -4.5), (-4, 2), (1.5, 2) Which exponents are equivalent to 2 exponent 6? Choose ALL that apply. What does Don Quixote do that causes the fall from the horse? Greenhouse gas emission is an example of:A.a negative externality.B.a public good.C.a positive externality.D.a private good.E.a problem that cannot be solved with economic incentives. at chick-fil-a we strive to provide an excellent experience for all of our customers. please describe in detail what factors you feel contribute to a customer having an excellent experience in our restaurant. Part C Each term in the Answer Bank relates to a scandal, an act of terrorism,or the cold war. Write each letter under the correct heading below.22.23.24.ScandalsAnswer BankA. 9/11B. Berlin wallC. Cuban missile crisis.D. Korean War25.26.E. Nicaraguan contras and IranF. Oklahoma City bombingG. WatergateH. Whitewater AffairTerrorism27.28.29.The Cold War The diameter of a circle is 7 cm. Find its area to the nearest whole number. Question below:In one paragraph (4-7 sentences), explain the role that Robespierre played inpromoting and institituting the reign of terror in France from 1793-1794. Use atleast one quote from the above text to explain your reasoning. What is one drawback of pure competition compared to monopolies During August, Bover Company sells $361000 in merchandise that has a one year warranty. Experience shows that warranty expenses average about 5% of the selling price. The worranty ability account has a credit balance of $12,300 before adjustment Customers returned merchandise for warranty repairs during the month that used $8,900 in parts for repairs. The entry to record the estimated waranty expense for the month is Multiple Choice Debt Warranty Experie $18.050, credit Estimated Warranty Laby $18.050, Debt stimated Warranty Cabilly 518,050, credt Warranty Experto $18,050 Out Wanny xperie 56.980, credit attented Warranty Laby S5750 Duot Woranty pense $4.050; credit estimated Warranty ability $4.650. Det som led Warranty 6.900 cred Warranty pense 58,900 Water is steadily dripping from a faucet into a bowl. You want to write an equation that represents the number of milliliters y of water in the bowl after x seconds. What is the constant of proportionality for the relationship between the number of milliliters y of water in the bowl and the time in seconds x? What is the equation?Water from Dripping FaucetTime inSeconds (x)Millilitersin Bowl (y)20320355604572060960The constant of proportionality is nothing Agile teams often conduct time-boxed research experiments to learn some critical technical or functional element of the project. What are these researches called? Based on the Normal model N( 100, 15) describing IQ scores, what percent of people's IQs would you expect to be a) over 80? b) under 90? c) between 112 and 132? Question 3 (3 Marks) Discuss how the application of standard costing technique enhances the productivity and profitability of a company with the help of a suitable example. Write an equation for the relationshipShown in the table. Then find theUnknown value (?) in the table.X- 4, 10, 12, 18, 23Y- -1, 0.5, 1, ?, 3.75