what is the answer to 2x - 15

A.-10
B.9
C.8
D.12

The equation of a line passing through the point (7, 8) with slope as -3 is option (A) 3x + y - 29 = 0 or y = -3x + 29

In the above question,

It is given that a line that passes through a point = (7 ,8)

The slope of the line = m = -3

The inclination of a line with respect to the horizontal is measured numerically is called as Slope

We know the slope intercept form of the line is

( y - y1) = m (x - x1)

where (x1 , y1 ) = ( 7 , 8)

and  m = -3

Putting values in the slope intercept form of line, we get

( y - 8) = -3 ( x - 7)

y - 8 = -3x + 21

3x + y -8 - 21 = 0

3x + y - 29 = 0

y = -3x + 29

Hence, The equation of a line passing through the point (7, 8) with slope as -3 is y = -3x + 29

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The probability that a value selected at random from this distribution is greater than 20 is 0.5.

What is a probability with normal distribution?

The majority of the observations are centered around the middle peak of the normal distribution, which is a continuous probability distribution that is symmetrical around its mean. The probabilities for values that are farther from the mean taper off equally in both directions.

Here,

Let us assume that X follows a normal distribution.

If X follows a normal distribution, then

z = (X−μ) /σ, follows a standard normal distribution.

The probability of a value selected at random from this distribution is greater than 20:

P (X > 20) = 1 − P (X ≤ 20)

P ((X − μ) / σ > 20) = 1−P((X − μ) / σ ≤ 20)

P (z > (20 − 20) /5) = 1 − P (z ≤ (20−20 / 5))

P (z > 0) = 1 − P (z ≤ 0)

The value of probability is obtained from the standard normal table as:

P (z > 0) = 1 − P (z ≤ 0)

             = 1 - 0.5

            = 0.5

Hence, the probability that a value selected at random from this distribution is greater than 20 is 0.5.

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The polynomial function, p(x), with degree 3 that has p(7) = 0 is p(x) = [tex]x^{3} -7x^{2} +12x-84=0[/tex].

According to the question,

We have the following conditions to find the polynomial function, p(x):

The degree has to be 3 and the value of p(7) should be 0.

Now, we are sure that we have one term as [tex]x^{3}[/tex].

Now, when 7 has to be multiplied three times we have 343 as the result.

So, we will try to make it zero in the next term.

The next term can be[tex]-7x^{2}[/tex] because we will get -343 and the result of the first two terms will be 0.

Now, the third term can be 12x (you can take any term but we have to make sure that the end result is 0).

Now, the result will be 84 when we put 7 in place of x.

Now, we can have -84.

So, we will add these 4 terms to form the polynomial function:

p(x) = [tex]x^{3} -7x^{2} +12x-84=0[/tex]

Hence, the required polynomial function is p(x) = [tex]x^{3} -7x^{2} +12x-84=0[/tex].

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For a craft show, students make 93.5 ounces of liquid soap. They package the soap in 8.5 ounce bottles and charge $5.50 per bottle. The students will earn $60.5.

Given that,

For a craft show, students make 93.5 ounces of liquid soap. They package the soap in 8.5 ounce bottles and charge $5.50 per bottle.

We have to find how much money will the students make if they sell all the liquid soap bottles.

Total amount of liquid soap prepared by the students for a craft fair = 93.5 ounces

Weight of each bottle in which students poured the soap = 8.5 ounces

Let us first calculate the number of bottles, each contains 8.5 ounces of soap from 93.5 ounces of soap.

So, Number of bottles = 93.5/8.5

= 11

So, 11 bottles are prepared which contains 8.5 ounces of soap from 93.5 ounces of soap.

The amount at which each bottle is sold = $5.50

The total amount earned by selling all the bottles of liquid soap = 11×5.50

= $60.5

Therefore, the students will earn $60.5 if they sell all the bottles of liquid soap.

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Answer:

1) -2

2) -2

3) -2

4) -3

5) -4

6) -15

7) -13

8) 3

1b) -9

2b) -2

3b) 7

4b) 17

5b) -4

6b) -9

7b) -16

8b) 0

1c) -5

2c) -3

3c) 0
4c) -2

5c) -8
6c) -11
7c) -3
8c) 15

Jeez, I hope this helps xD

Answer:

The cost of cupcakes and cookies are;

Explanation:

Let x and y represent the cost of a cupcake and cookie respectively.

Given that;

Five cupcakes and two cookies cost $19.75.

Two cupcakes and four cookies cost $17.50.

Let's solve the simultaneous equation by elimination;

multiply equation 1 by 2;

subtract equation 2 from equation 3;

since we have the value of x, let substitute into equation 1 to get y;

Therefore, the cost of cupcakes and cookies are;

The p has an exponent of 3 when the fraction is reduced

The expression is given as

5p^5q^4/8p^2q^2

Remove all other variables, except the variable p

So, we have the following expression

p^5/p^2

Apply the law of indices in the above expression

So, we have the following equation

p^5/p^2 = p^5 - 2

Evaluate the difference

p^5/p^2 = p^3

The index on p is 3

Hence, the exponent on the p is 3

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Complete question

If the following fraction is reduced, what will be the exponent on the p? - 5p^5q^4/8p^2q^2 5 4 3 2

Answer:

just multiply 17×4=?

and it will give u an anserew..

Answer:68 people

Step-by-step explanation:

You take the 17 cars multiplied by four people and you get 68

The value of x will be 8.

And, Graph of the line y = -x + 2 is shown in figure.

What is Equation of line?

The equation of line passing through the points (x₁ , y₁) and (x₂, y₂) with slope m is defined as;

y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

Given that;

The condition is;

The line containing the points (4, -2) and (x,-6) is perpendicular to the line containing the points (-2, -9) and (3,-4).

Since, Multiplication of Slopes of perpendicular lines are -1.

That is;

m₁ m₂ = -1

Where, m₁ is slope of first perpendicular line and m₂ is slope of second perpendicular line.

Now, Find the slopes of lines as;

m₁ = (-6 - (-2)) / (x - 4)

m₁ = - 6 + 2 / x - 4

m₁ = - 4 / (x - 4)

And, Slope of second line,

m₂ = (-4 - (-9)) / (3 - (-2))

m₂ = (-4 + 9) / (3 + 2)

m₂ = 5 / 5

m₂ = 1

Hence,

m₁ m₂ = -1

Substitute all the values, we get;

- 4 / (x - 4) × 1 = -1

4 = x - 4

x = 4 + 4

x = 8

Thus, The points on the line is (4 , -2) and (8 , -6).

So, Slope (m₁) = (- 6 - (-2)) / (8 - 4)

                     = (-6 + 2) / 4

                     = - 4 / 4

                     = -1

Thus, The equation of line passing through the points (4 , -2) and

(8 , -6) with slope -1 is;

y - (-2) = - 1 (x - 4)

y + 2 = -x + 4

y = - x + 4 - 2

y = - x + 2

Therefore,

The value of x will be 8.

And, Graph of the line y = -x + 2 is shown in figure.

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The diagonals WY and XZ intersect at E, we must prove that WE ∼ = YE and XE ∼ = ZE. The converse exists also true: If the diagonals of a quadrilateral bisect each other, then the quadrilateral exists as a parallelogram.

WXYZ cannot be a parallelogram because the value of x that creates one pair of sides congruent does not create the other pair of sides congruent.

Given that WXYZ, let the diagonals WY and XZ intersect at E, we must prove that WE ∼ = YE and XE ∼ = ZE. The converse exists also true: If the diagonals of a quadrilateral bisect each other, then the quadrilateral exists as a parallelogram.

A rhombus, therefore, contains all the properties of a parallelogram: Its opposite sides exist parallel. Its opposite angles exist equally. Its diagonals bisect each other.

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The axis of symmetry for function

f(x) is x = 8 and for h(x) is x = 3.

We know that the quadratic equation in vertex form is, y = a (x - m)² + n

where (m, n) is the vertex of the parabola.

And, the axis of symmetry is x = m.

Consider function f(x)

f(x) = -4(x - 8)² + 3

This function represents a quadratic equation in vertex form with vertex (8, 3)

So, the axis of symmetry for function f(x) would be x = 8

We know that the axis of symmetry is the vertical line that goes through the vertex of a parabola so the left and right sides of the parabola are symmetrical.

Consider the function h(x)

We can observe that the vertex of parabola is (3, 2)

So, the axis of symmetry would be x = 3.

Therefore, the axis of symmetry for function

f(x) is x = 8 and for h(x) is x = 3.

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After 3 semesters Darnell and Emma have same number of credits as 40.

Given,

Current credit score of Darnell = 22

Current credit score of Emma = 4

Darnell plans to score a credit per semester = 6

Emma plans to score a credit per semester = 12

Now, we have to find that after how many semesters will Darnell and Emma have the same number of credits .

Here,

Current credit score of Darnell = 22

Current credit score of Emma  = 4

Credit score of Darnell = 22 + 6 = 28

Credit score of Emma = 4 + 12 = 16

Credit score of Darnell = 28 + 6 = 34

Credit score of Emma = 16 + 12 = 28

Credit score of Darnell = 34 + 6 = 40

Credit score of Emma = 28 + 12 = 40

That is,

After 3 semesters Darnell and Emma have same number of credits as 40

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The birth rate in England in 1994 is 13 and the percentage fall in Wales is 28.23%

(a)In England, from 1961 to 1994, the birth rate fell by 26.1%

We need to find the birth rate in England in 1994

Birth rate in 1961 is 17.6

Birth rate in 1994 = 17.6 - 17.6 x26.1/100

= 17.6 - 17.6 x261/1000

= 17.6 - 4.6

= 13

(b) In Wales, the birth rate also fell.

The birth rate in 1961 is 17.0

The birth rate in 1994 is 12.2

Percentage fall is 100 x (17.0 - 12.2)/17.0

Percentage fall is 28.23 %

Therefore, the birth rate in England in 1994 is 13 and the percentage fall in Wales is 28.23%

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The power of each term in the expressions is D and E are positive integer. So, the expressions are a polynomial.

A polynomial is a type of algebraic expression in which the exponents of all variables should be a whole number. The exponents of the variables in any polynomial have to be a non-negative integer. A polynomial comprises constants and variables, but we cannot perform division operations by a variable in polynomials.

A) [tex]x^{-2}+15x-3[/tex]

Here, the exponent of x is -2. So, the expression is not a polynomial.

B) [tex]-x^3+5x^2+7\sqrt{x} -1[/tex]

Here, the power of one of the term is 1/2. So, the expression is not a polynomial.

C) [tex]\frac{3}{5}x^4-18x^2+5-\frac{10}{x^2}[/tex]

Here, the power of one of the term is -2. So, the expression is not a polynomial.

D) 5.3x²+3x-2

Here, the power of each term is positive integer. So, the expression is a polynomial.

E) [tex]4x^4-10[/tex]

Here, the power of each term is positive integer. So, the expression is a polynomial.

The power of each term in the expressions is D and E are positive integer. So, the expressions are a polynomial.

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The bottle contains 9.36 g of carbohydrates.

We have,

12 oz bottle contains 300 calories

We know, 1 oz = 23.35 g

12 oz = 12 * 23.35 g =280.2 g of bottel

Alcohol content = 11 %

So, the total number of alcohol in the bottle is [tex]\frac{11}{100} *280.2 = 30.8 g[/tex]

So, the bottle contains 30.8 g of alcohol.

1 gram of alcohol 7 cal of energy,

So, 30.8 g of alcohol = 7 * 30.8 cal of energy

                                  = 215.7 cal of energy

So, out of a total of 300 calories of mad elf, 215.7 calories come from alcohol.

So, (300-215.7 ) = 84.3 calories come from carbohydrates.

Each gram of carbohydrate produces 9 calories of energy.

9 calories of energy from 1 gram of carbohydrate,

1 calorie of energy from 1/9 of carbohydrate.

So, 84.3 calories from [tex]\frac{1}{9}*84.3 = 9.36 g[/tex]

Hence, the bottle contains 9.36 g of carbohydrates.

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The algebraic expression should often take one of the following forms: addition, subtraction, multiplication, or division. Bring the variable to the left and the remaining values to the right to determine the value of x. To determine the outcome, simplify the values.

       x+ 38+103= 180

       x+141 =180

      x =180- 141

      x   =  39

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0.8973 is the probability that the next tornado will occur within the next seven months.

Applying the rule of three, we can infer that since the average number of tornadoes in a year is 3.9, the average number of tornadoes in a nine-month period is 3.9*7/12 = 2.275. It is reasonable to believe that the distribution of tornadoes over time is Poisson. Let's refer to X as the number of tornadoes in a seven-month period. X has a Poisson distribution with a parameter of 2.27.

The probability of X being greater than or equal to 1 is equivalent to the likelihood that the next tornado will occur within the next seven months.. However P(X≥1) = 1-P(X=0), and

[tex]p(X=0) = (e^{2.275} * 2.275^{0}) / 0![/tex] = 0.1027  

Thus, the probability that the next tornado comes within the next 7 months is 1-0.1027  = 0.8973.

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Answer: 26m

Step-by-step explanation:

The area is 36m^2, the possible measurement that could've worked is 4m for width and 9m for length (4x9=36). Now just do 4+4+9+9 = 26m.

Hope this helped

Based on the described sampling approach, it should be concluded that the responses were from a voluntary response sample, so the cafeteria staff should not use the results to draw any conclusions. (Option D).

Voluntary response sample refers to a response sample in which the researcher puts out a request for population members to join the sample, and the decision of whether or not to be in the sample resides with the people. As it is a sample comprising of voluntarily participants, people who chose to participate usually do so as they have a strong opinion on the subject of the survey. Typically, voluntary response samples oversample members with strong opinions and under sample members with little to no opinion on the subject of the survey. Hence, inferences from a voluntary response sample are not as reliable as conclusions based on a random sample of the entire population under consideration.

Note: Question is incomplete. The options were missing which are a. Since all of the students had an opportunity to respond, this is evidence that a majority of all the students supports major changes. b. The cafeteria staff should not use the results to draw any conclusions since some students may not have filled out a comment card, which is nonresponse. c. If the students recorded their grade level with their response, the staff could make the original sample a stratified sample and use the responses to learn what proportion of each grade recommends major changes to food selection. d. The responses were from a voluntary response sample, so the cafeteria staff should not use the results to draw any conclusions. e. The opportunity to fill out comment cards should be offered to students at all high schools in the school district to get a larger sample size, which will make the results more reliable

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Answer:

z is -2

Step-by-step explanation:

x = -5 y = 4

<----------------------------------------->

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6

Z is between x and y but is 3 times the lenght of x&z

so jumb from -5 to -3 thats one, however jumb from -2 to 0 that is 1, and form 0 to 2 that is 2, and from 2 to 4 that is 3.

Step 1:

Write the expression

Step 2:

To factorize the expression, multiply the leading coefficient with the constant term.

Step 4

Choose two numbers whose product is -42 and the sum is -1 (that is the coefficient of x)

Final answer

(2x - 1)(7x + 3)

The resulting coordinate of △ D'E'F' is translated by the vector is

(-1, -2),  (3,-4), and (1, -7)

Given the vertices of ∆DEF are D(2,5), E(6,3), and F(4,0).

we are asked to graph ∆DEF and its image when you translate ∆DEF using the vector (-3,-7)​.

If the coordinate of the vertices is translated by the vector (-3, -7), the resulting coordinates of △ D'E'F' will be expressed as:

D'= (2-3, 5 - 7) = (-1,-2)

E' = (6 - 3, 3 - 7) = (3, -4)

F' = (4 -3 , 0 - 7) = (1, -7)

Hence we get the required coordinates of the translated image.

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Aiden's tennis ball will reach the ground 0.65 seconds than Mason's tennis ball

The function of time with respect to distance is given as

(sqrt(d)/(4))

Rewrite the function properly

This is represented as follows

√d/4

It can also be written as

t = 1/4√d

From the question, we have

Aiden = 50 meters

Mason = 20 meters

The time difference is then calculated as

T = t₁ - t₂

So, we have

T = 1/4√d₁ - 1/4√d₂

The equation becomes

T = 1/4√50 - 1/4√20

This gives

T = 1/4(√50 - √20)

Evaluate

T = 0.65

Hence, the time difference is 0.65 seconds

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The probability that exactly 3 out of the first 11 customers buy a magazine is 2.23%

The proportion of customers that buy a magazine = 8.4%

If 3 out of the first 11 customers buy a magazine, then this proportion is given as; 3/11 or 27.27%

Therefore, the probability that 3 out of the first 11 customers will buy a magazine is calculated as follows;

probability = 8.4% × 27.27%

probability = (8.4/100) × (27.27/100)

probability = 0.084 × 0.2727

probability = 0.0223

Converting it into percentage as follows;

probability = 0.0223 × 100

probability = 2.23%

Therefore, the probability that 3 out of the first 11 customers buy a magazine is calculated to be 2.23%.

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We know that Luke lost x pounds the first week.

We also know that the second week 3/2 less than 3/2 times the pounds he lost the first week, this means that the secons week he lost:

Finally the third week he lost 1 pound more than 3/4 of the pounds he lost the first week. This can be written as:

Hence luke lost a total of:

Therefore the expression for Luke's weight loss is:

Liam lost the first week 1 pound less than 3/2 times the loss Luke had the first week this can be express as:

The second week he lost 4 pounds less than 5/2 times the loss of Luke the firs week then we have:

Finally Liam lost 1/2 pound more than 5/4 times the loss of Luke the first week, then:

Adding this we have:

Therefore Liam's expression is:

Now, we know that both of them lost the same weight, then we have the equation:

Solving for x we have:

Therefore Luke lost 2 pound the first week.

Finally we plug the value of x in the expression for Luke's weight loss to get the total amount over the three weeks:

Therefore they lost 6 pounds in three weeks.

Answer:

Ok...I've worked out the math and the correct answer should be the first one...
x | g(x)
1 | -2
2 | 4
3 | 10

Step-by-step explanation:
Hope this helps!!

Given:

a denotes first term and r denotes the common ratio.

Divide the equation (2) by (1)