Help me please will mark brainiest if you explain how

Help Me Please Will Mark Brainiest If You Explain How

Answers

Answer 1

The graph is attached.

Given is a triangle ABC, we need to find its coordinates if it is reflected over y = -x,

The rule of reflection over y = -x is,

(x, y) = (-x, -y)

So,

A = (-5, -4)

B = (1, -4)

C = (-1, -5)

After reflection,

A' = (5, 4)

B' = (-1, 4)

C' = (1, 5)

Hence the points after reflection are A' = (5, 4), B' = (-1, 4) and C' = (1, 5)

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Help Me Please Will Mark Brainiest If You Explain How

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Question 6 Suppose a Pharmaceutical company manufactures a specific drug and needs to perform some quality assurance to ensure that they have the correct dosage, which is supposed to be 500 mg. In a random sample of n=125 units of the drug, there is an average dose of x=499.3 mg with a standard deviation of =6 mg. What is the likelihood that the drugs produced will actually contain a dosage of 500 mg?

Answers

If in a random sample of n=125 units of the drug, there is an average dose of x=499.3 mg with a standard deviation of =6 mg the likelihood of the drugs produced containing a dosage of 500 mg is fairly high.

Based on the information provided, we can use the concept of the standard error of the mean to determine the likelihood that the drugs produced will contain a dosage of 500 mg.

The formula for the standard error of the mean is:

SE = s/√n

Where:
s = standard deviation of the sample
n = sample size

Substituting the values given, we get:

SE = 6/√125
SE = 0.54

This means that the sample mean of 499.3 mg is 0.54 units away from the true population mean of 500 mg.

To determine the likelihood of the drugs produced containing a dosage of 500 mg, we can use a confidence interval. A 95% confidence interval for the mean dosage can be calculated as:

Mean dosage ± 1.96(SE)

Substituting the values given, we get:

499.3 ± 1.96(0.54)
499.3 ± 1.06

The 95% confidence interval for the mean dosage is (498.24, 500.36).

Therefore, there is a 95% chance that the true population means dosage falls within this interval. Since the interval includes the value of 500 mg, we can conclude that the likelihood of the drugs produced containing a dosage of 500 mg is fairly high.

In a random sample of n=125 units of the drug, there is an average dose of x=499.3 mg with a standard deviation of =6 mg is very high.

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E-Loan, an online lending service, recently offered 60-month auto loans at 3.9% compounded monthly to applicants with good credit ratings. a. If you have a good credit rating and can afford monthly payments of $586, how much can you borrow from E-Loan?
b. What is the total interest you will pay for this loan?
E-Loan:
Electronic loan or E-loan refers to the services in which banks or other financial institutions provide loans to their customers through online modes, subject to successful verification of certain documents.

Answers

a. If you have a good credit rating and can afford monthly payments of $586, you can borrow $32,521.48 from E-Loan. This can be calculated using the formula for a present value annuity:

PV = PMT x ((1 - (1 + r/n)^(-nt)) / (r/n))

Where PV is the present value, PMT is the monthly payment, r is the annual interest rate (3.9%), n is the number of times the interest is compounded per year (12 for monthly compounding), and t is the number of years (5 for a 60-month loan). Plugging in these values, we get:

PV = $586 x ((1 - (1 + 0.039/12)^(-12*5)) / (0.039/12)) = $32,521.48

b. The total interest you will pay for this loan is $3,911.88. This can be calculated using the formula for total interest paid on a loan:

Total interest = (PMT x n x t) - PV

Where PMT, n, and t are the same as before, and PV is the amount borrowed. Plugging in the values, we get:

Total interest = ($586 x 60 x 5) - $32,521.48 = $3,911.88

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To fit in an existing frame, the length, x, of a piece of glass must be longer than 12 cm but not lonner than 122 cm. Which inequality can be used to represent the lengths of the glass that will fit in the frame?

Answers

The inequality that can be used to represent the lengths of the glass that will fit in the frame is 12 < x ≤ 122

How to determine the inequality can be used to represent the lengths of the glass that will fit in the frame

We are given that the length, x, of a piece of glass must be longer than 12 cm but not longer than 122 cm in order to fit in an existing frame.

This can be represented mathematically using the inequality 12 < x ≤ 122

Therefore, the inequality that can be used to represent the lengths of the glass that will fit in the frame is 12 < x ≤ 122

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QUESTION 2When drawing up a timetable, the following principles must bekept in mind, or taken into consideration:a. Educators should be efficiently deployed, and teaching loadss should be balanced across the timetable.b. The capacity of the building will determine whether thelearners move from classroom to classroom, or whether the educatorsmove or both groups move.c. It should allow for non-teaching timed. Educators should be timetabled to teach the learning areas orsubjects in which they are trainede. Balance: practical subjects or double periods should notfollow too closely upon teach other2.1 Reflect on the school timetable you followed during teachingpractice and elaborate on the above-mentioned points with the aidof one practical example for each.

Answers

Educational psychology provides teachers with research-based principles to guide their teaching.

When teachers go through educational psychology, they are taught on ways to improve their teaching.

These ways will be based on research overtime that have proved efficient in helping students learn from teachers.

Some of these include empowering school social and cultural structures, minimizing bias, implementing an equity pedagogy, the method of knowledge creation, and integrating content (Banks, 1995a).

The main goal of multicultural education is to reduce barriers to educational opportunity and success for students from different cultural backgrounds. The principle that all pupils, regardless of culture, deserve educational equity serves as its cornerstone.

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Assume that the situation can be expressed as a linear cost function. find the cost function
fixed cost is $300; 40 items cost $2,300 to produce
The linear cost function is C(x)=????

Answers

C(x) is the linear cost function: C(x) = $50x + $300

Where x denotes the number of things manufactured.

What is function?

A function connects an input with an output. It is analogous to a machine with an input and an output. And the output is somehow related to the input. The standard manner of writing a function is f(x) "f(x) =... "

To find the linear cost function, we need to determine the slope of the cost function and the value of the y-intercept.

Given that 40 items cost $2,300 to produce, we can use this information to find the slope:

Slope = (Change in cost) / (Change in quantity)

Slope = (Total cost for 40 items - Fixed cost) / (40 items - 0 items)

Slope = ($2,300 - $300) / (40 - 0)

Slope = $2,000 / 40

Slope = $50 per item

The fixed cost of $300 represents the y-intercept of the cost function.

Therefore, the linear cost function C(x) is:

C(x) = $50x + $300

Where x represents the number of items produced.

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Use the figure to find the Surface Area.



32 sq. units
64 sq. units
85 1/3 sq. units

Answers

The surface area of the sphere is 64π square units.

Option B is the correct answer.

We have,

Surface area of a sphere = 4πr² ______(1)

Now,

Radius = 4 units

Substituting in (1)

The surface area of a sphere

= 4πr²

= 4 x π x 4²

= 4π x 16

= 64π square units

Thus,

The surface area of the sphere is 64π square units.

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The 22 students in Mrs. Aire's class, each purchased balloons to decorate for a party in the gym. Each student paid $3.80. About how much money did the students spend?​

Answers

Answer:

$83.60

Step-by-step explanation:

22 x $3.80 = $83.60

Express the numbers on the graph as an inequality, set notation, and interval notation

Answers

The inequality is -2 < x ≤ 1 and the interval notation is ( -2 , 1 ]

Given data ,

Let the inequality be represented as A

Now , the value of A is

-2 < x ≤ 1

And , Interval notation: (-2, 1]

In interval notation, the parentheses "(" and ")" represent open intervals, which means the endpoints are not included, and the square bracket "]" represents a closed interval, which means the endpoint is included.

And , Set-builder notation: {x | -2 < x ≤ 1}

In set-builder notation, the vertical bar "|" is read as "such that," and the inequality -2 < x ≤ 1 describes the set of all values of x that satisfy this condition.

Hence , the inequality is -2 < x ≤ 1

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The rectangle ok the right is a scaled copy of the rectangle on the left. Identify the scale factor. Express your answer as a whole number or fraction in simplest form.

Answers

If right is a scaled copy of the rectangle on the left then the scale factor is  1/2.

The scale factor can be calculated by dividing the corresponding lengths (or widths) of the two rectangles.

The length of the left rectangle is 20 units, and the length of the right rectangle is 10 units.

Therefore, the scale factor for the length is:

scale factor for length = length of right rectangle / length of left rectangle

= 10 / 20

= 0.5

scale factor for width = width of right rectangle / width of left rectangle

= 5 / 10

= 0.5

Since the two scale factors are the same, we can conclude that the rectangles are scaled by the same factor of 0.5 in both the length and the width.

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. If Maria saves $300 every month for 2 years, find the present value of her investment assuming 12% annual
nterest rate, compounded monthly.

$5,674.18
$3,376.52
$6,373.02
$2,124.34

Answers

Answer:

The correct answer is $6,373.02.

We can use the formula for present value of an annuity:

PV = PMT x ((1 - (1 + r/n)^(-n*t)) / (r/n))

Where PV is the present value, PMT is the monthly payment, r is the annual interest rate, n is the number of times the interest is compounded per year, and t is the number of years.

Plugging in the values, we get:

PV = 300 x ((1 - (1 + 0.12/12)^(-12*2)) / (0.12/12))

PV = $6,373.02

Therefore, the present value of Maria's investment is $6,373.02.

Two histograms showing the number of hours students in the jazz band practiced in a week are shown. The sample
mean of Group 1's data is 2.57. The sample mean of Group 2's data is 3.337.

Which statement about the two histograms is true?

Graph 1 has a larger sample standard deviation than Graph 2.

Graph 2 has a larger sample standard deviation than Graph 1.

Both graphs have the same sample standard deviation.

The relationship of the sample standard deviations cannot be determined.

Answers

Answer:

The Answer Is B "Graph 2 has a larger sample standard deviation than Graph 1"

Step-by-step explanation:

Because the message in the text said the mean of Group 1's data is 2.57 while the sample mean of Group 2's data is 3.337 and from what I understand. 3.337 is a lot more than 2.57

Answer:

  (b)  Graph 2 has a larger sample standard deviation than Graph 1

Step-by-step explanation:

Given the two histograms of hours practiced, you want to know the relationship between the sample standard deviations of the two data sets.

Standard deviation

The standard deviation is a measure of data variability. It will tend to be larger for less-symmetrical data distributions, and for those that are skewed one way or another.

The data of Graph 2 is less symmetrical than that of Graph 1, so we expect its standard deviation to be higher. A computation of the standard deviation confirms this.

Graph 1 standard deviation: about 1.40

Graph 2 standard deviation: about 1.53

Graph 2 has a larger sample standard deviation than Graph 1, choice B.

__

Additional comment

In the computation, the first list (L1) is the set of data values. The second list, {2, 3, 4, ...} for example, is their relative frequencies—the heights of the bars in the histogram.

The given mean values seem to show that each bar is represented by its midpoint value, 0.5 for the first bar, for example. For the purpose of the standard deviation calculation, we don't need to make that adjustment.

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Construct a confidence interval for assuming that each sample is from a normal population (a) -26,0 = 3, n=15, 90 percentage confidence (Round your answers to 2 decimal places.)

Answers

The 90% confidence interval for the population mean is (-9.05, 15.05).

To construct a confidence interval for a population mean with a known standard deviation when the sample size is less than 30, we use the formula:

CI = x ± z*(σ/√n)

where x is the sample mean, σ is the population standard deviation, n is the sample size, z is the z-score associated with the desired confidence level, and CI is the confidence interval.

Given the information provided, we have:

x = 3

σ = 26

n = 15

The desired confidence level is 90%, which corresponds to a z-score of 1.645 (from the standard normal distribution table)

Substituting these values into the formula, we get:

CI = 3 ± 1.645*(26/√15)

CI = 3 ± 12.05

Therefore, the 90% confidence interval for the population mean is (-9.05, 15.05).

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The quality control inspector of a factory manufacturing screws found that the samples of screws are normally distributed with a mean length of 5.5 cm and a standard deviation of 0.1 cm.

If the distribution is normal, what percent of data lies between 5.3 centimeters and 5.7 centimeters?
A. 95%
B. 99.7%
C. 68%
D. 34%

Answers

In this case, the mean is 5.5 cm and the standard deviation is 0.1 cm. So, one standard deviation below the mean is 5.4 cm and one standard deviation above the mean is 5.6 cm. Therefore, about 68% of the data falls between 5.4 cm and 5.6 cm, which includes the range of 5.3 cm to 5.7 cm.

Your question involves a normal distribution with a mean (µ) of 5.5 cm and a standard deviation (σ) of 0.1 cm. You want to find the percentage of data between 5.3 cm and 5.7 cm.

First, we need to standardize the scores using the z-score formula: z = (x - µ) / σ

For 5.3 cm: z1 = (5.3 - 5.5) / 0.1 = -2
For 5.7 cm: z2 = (5.7 - 5.5) / 0.1 = 2

Now, referring to a standard normal distribution table or using a calculator, we find the area between these z-scores:

This can be determined using the empirical rule, also known as the 68-95-99.7 rule, which states that for a normal distribution:
- About 68% of the data falls within one standard deviation of the mean
- About 95% of the data falls within two standard deviations of the mean
- About 99.7% of the data falls within three standard deviations of the mean

P(-2 < z < 2) = P(z < 2) - P(z < -2) = 0.9772 - 0.0228 = 0.9544

Converting it to a percentage, we get 95.44%, which is approximately 95%.

So, the answer is A. 95%.

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xamine the given statement, then identify whether the statement is a null hypothesis, an alternative hypothesis, or neither. the mean income of workers who have majored in history is less than $25,000.

Answers

The given statement, "The mean income of workers who have majored in history is less than $25,000," is an alternative hypothesis.

An alternative hypothesis is a statement that is tested against the null hypothesis, which generally claims no relationship or effect. In this case, the null hypothesis would be, "The mean income of workers who have majored in history is greater than or equal to $25,000."

We must first comprehend the idea of null and alternative hypotheses in hypothesis testing before we can comprehend why the above statement is an alternate hypothesis.

When doing a hypothesis test, we begin with a null hypothesis, which is a claim that there is no connection between the variables under investigation.

The null hypothesis in this situation would be "The mean income of workers with history majors is greater than or equal to $25,000."

On the other side, the competing hypothesis asserts that the median income of people who majored in history is less than $25,000.

The supplied claim, "The mean income of workers who majored in history is less than $25,000," is, therefore, a counterclaim.

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What value is a discontinuity of x squared plus 7 x plus 1, all over x squared plus 2 x minus 15?
NEED HELP FAST

Answers

At x equals -5 and x equals 3 our function is discontinuous.

We have been given a rational function:

f(x) = [tex]\frac{x^{2}+7x+1 }{x^{2} +2x-15}[/tex]

We are asked to find the points at which our function is discontinuous.

A rational function is discontinuous when the function is undefined or the denominator is zero.

Let us find what values of x will make our denominator zero.

[tex]x^{2} +2x-15=0[/tex]

We will use factoring to find the zeros of x. By splitting the middle term we will get,

[tex]x^{2} + 5x - 3x -15=0\\\\x(x+5)-3(x+5)=0[/tex]

(x +5)(x - 3) = 0

x = -5 and x = 3

Therefore, at x equals -5 and x equals 3 our function is discontinuous.

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HELP ME!!!!!!!! LEAP PRACTICE!!!!!!!! (MATH)!!!!!!!

Answers

Answer:I can't see the question

Step-by-step explanation:

Let X is a random variable with probability density function f(x) = {3x? for 0

Answers

The variance of X is 3/80.

Given the probability density function of X,

f(x) = {3x² for 0 < x < 1

{0 otherwise

We can use this to answer the following:

(a) Find P(X < 0.5)

To find P(X < 0.5), we need to integrate the density function from 0 to 0.5:

P(X < 0.5) = ∫[0,0.5] f(x) dx

= ∫[0,0.5] 3x² dx

= [x³]₀.₃

= 0.125

(b) Find the cumulative distribution function of X, F(x)

The cumulative distribution function (CDF) of X is given by:

F(x) = P(X ≤ x) = ∫[0,x] f(t) dt

If x ≤ 0, then F(x) = 0. If 0 < x ≤ 1, then

F(x) = ∫[0,x] f(t) dt

= ∫[0,x] 3t² dt

= [t³]₀.ₓ

= x³

If x > 1, then F(x) = 1. So, the CDF of X is:

F(x) = {0 if x ≤ 0

{x³ if 0 < x ≤ 1

{1 if x > 1

(c) Find the expected value of X, E(X)

The expected value of X is given by:

E(X) = ∫[−∞,∞] x f(x) dx

Since the density function f(x) is zero outside the interval [0,1], we can restrict the integration to this interval:

E(X) = ∫[0,1] x f(x) dx

= ∫[0,1] 3x³ dx

= [3/4 x⁴]₀.₁

= 3/4 * 1⁴ - 0

= 3/4

Therefore, the expected value of X is 3/4.

(d) Find the variance of X, Var(X)

The variance of X is given by:

Var(X) = E(X²) - [E(X)]²

We have already found E(X) in part (c). To find E(X²), we integrate x² times the density function:

E(X²) = ∫[0,1] x² f(x) dx

= ∫[0,1] 3x⁴ dx

= [3/5 x⁵]₀.₁

= 3/5 * 1⁵ - 0

= 3/5

Substituting into the formula for variance:

Var(X) = E(X²) - [E(X)]²

= 3/5 - (3/4)²

= 3/5 - 9/16

= 3/80

Therefore, the variance of X is 3/80.

Complete question: Let X be a random variable defined by the density function

[tex]$$f(x)=\left\{\begin{array}{cl}3 x^2 & 0 \leq x \leq 1 \\0 & \text { otherwise }\end{array}\right.$$[/tex]

Find

(a)[tex]$E(X)$[/tex]

(b) [tex]$E(3 X-2)$[/tex]

(c) [tex]$E\left(X^2\right)$[/tex]

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5(x+3)=17x-93 solve for x

Answers

I think it's 9, tell me if I'm wrong

Answer all boxes and read the questions

Answers

The amount of paper used for the label on the can of tune is 12.57 in²

Here, the shape of the can of can is cylindrical.

The area of the cured surface of cylinder is given by formula,

A = 2πrh

where r is the radius of the cylinder

and h is the height of the cylinder

Here, r = 2 in and h = 1 in

so, the area of the lateral surface of cylinder would be,

A = 2 × π × r × h

A = 2 × π × 2 × 1

A = 4 × π

A = 12.57 sq. in.

Therefore, the required amount of paper = 12.57 in²

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(-76.25 Points] DETAILS BBBASICSTATSACC 8.1.018.MI. MY NOTES ASK YOUR TEACHER What price do farmers get for their watermelon crops? In the third week of July, a random sample of 42 farming regions gave a sample mean of x = $6.88 per 100 pounds of watermelon. Assume that o is known to be $1.92 per 100 pounds. (a) Find a 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their watermelon crop (in dollars). What is the margin of error in dollars)? (For each answer, enter a number. Round your answers to two decimal places.) lower limit क upper limit $ margin of error (6) Find the sample size necessary for a 90% confidence level with maximal error of estimate E = 0.25 for the mean price per 100 pounds of watermelon. (Enter a number. Round up to the nearest whole number.) farming regions (c) A farm brings 15 tons of watermelon to market. Find a 90% confidence interval for the population mean cash value of this crop in dollars). What is the margin of error (in dollars)? Hint: 1 ton is 2000 pounds. (For each answer, enter a number. Round your answers to two decimal places.) Tower limit S 6 upper limit margin of error S

Answers

Answer:

I'm not quite sure if you are joking or not, but here is your answer:
(a) The point estimate for the population mean price (per 100 pounds) is x = $6.88. The standard deviation is known to be σ = $1.92. The sample size is n = 42. For a 90% confidence interval, the critical value is 1.645 (obtained from a t-distribution table with 41 degrees of freedom). The margin of error is:

Margin of error = Critical value x Standard error

Standard error = Standard deviation / sqrt(sample size) = 1.92 / sqrt(42) = 0.2968

Margin of error = 1.645 x 0.2968 = 0.4882 ≈ 0.49

The lower limit of the confidence interval is:

Lower limit = Point estimate - Margin of error = 6.88 - 0.49 = $6.39

The upper limit of the confidence interval is:

Upper limit = Point estimate + Margin of error = 6.88 + 0.49 = $7.37

Therefore, the 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their watermelon crop is $6.39 to $7.37. The margin of error is $0.49.

(b) The maximal error of estimate is E = 0.25. The confidence level is 90%. The standard deviation is known to be σ = $1.92. We need to find the sample size (n) that satisfies the following formula:

Margin of error = Critical value x Standard error

Standard error = Standard deviation / sqrt(sample size)

For a 90% confidence interval, the critical value is 1.645. Substituting the known values and solving for n, we get:

0.25 = 1.645 x (1.92 / sqrt(n))

sqrt(n) = (1.645 x 1.92) / 0.25

n = [(1.645 x 1.92) / 0.25]^2

n ≈ 113

Therefore, a sample size of 113 farming regions is necessary for a 90% confidence level with maximal error of estimate E = 0.25 for the mean price per 100 pounds of watermelon.

(c) The farm brings 15 tons of watermelon to market, which is equivalent to 30,000 pounds (since 1 ton = 2,000 pounds). The point estimate for the population mean cash value of this crop is unknown. We can use the confidence interval obtained in part (a) to estimate this interval. Multiplying the lower and upper limits by 300 (since 300 pounds of watermelon correspond to $6.88), we get:

Lower limit = 6.39 x 300 = $1917

Upper limit = 7.37 x 300 = $2211

Therefore, the 90% confidence interval for the population mean cash value of this crop is $1917 to $2211. The margin of error is:

Margin of error = (Upper limit - Lower limit) / 2 = (2211 - 1917) / 2 = $147

Write an exponential decay function to the model the situation compare the average rates of change over the given intervals

Initial value:58

Decay factor:0. 9

1

Answers

To write an exponential decay function to the given model and we compare the average rate of changes over the given intervals. Then the average rate of change comes out to be, for situation 1 is-4.065 and situation 2 is -2.667.

It is given that,

Initial value: 50

Decay factor: 0.9

1 ≤ x ≤ 4 and

5 ≤ x ≤ 8

x = 1

f(x) = 50(0.9)¹

f(x) = 45

x = 4

f(x) = 50(0.9)¹

f(x) = 32.805

Now, the average rate of change for situation 1 where x = 1 and x = 4

= (32.805 - 45) / (4 - 1)

= -4.065

average rate of change for situation 2 where x = 5 and x = 8

= (50(0.9)⁵ - 50(0.9)⁸) / (5 - 8)

= 8.0011 / -3

= -2.667

Thus, the average rate of change for situation 1 is-4.065 and situation 2 is -2.667.

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Note that the full question is:

Write an exponential decay function to the model the situation compare the average rates of change over the given intervals

Initial value: 50

Decay factor: 0.9

1 ≤ x ≤ 4 and

5 ≤ x ≤ 8

Question 4 Write the system 1-x+2y+z =7 2z-y+4z=17 3x - 2y +2z = 14 in the matrix form by using matrix multiplication. Question 5 Solve the equation system in Question 4 by using Cramer's method.

Answers

The solution to the system of equations is x=-3.35, y=-7, z=3 using Cramer's method.

| 1  -1  2 |   | x |   | 7 |

| 0  -1  6 | x | y | = |17 |

| 3  -2  2 |   | z |   |14 |

We can use Cramer's rule to solve this system of equations by finding the determinants of the coefficient matrix and the matrices obtained by replacing each column with the constant terms.

The determinant of the coefficient matrix is:

| 1  -1  2 |

| 0  -1  6 |

| 3  -2  2 |

= 1(-1*2 - 6*(-2)) - (-1*2 - 6*3) + 2*(2*(-1) - (-1)*(-2))

= 20

The determinant obtained by replacing the first column with the constant terms is:

| 7  -1  2 |

|17  -1  6 |

|14  -2  2 |

= 7(-1*2 - 6*(-2)) - (-1*17 - 6*14) + 2*(2*(-1) - (-1)*(-2))

= -67

The determinant obtained by replacing the second column with the constant terms is:

| 1  7  2 |

| 0 17  6 |

| 3 14  2 |

= 1(17*2 - 6*14) - 7(3*2 - 14*2) + 2(3*17 - 14*0)

= -140

The determinant obtained by replacing the third column with the constant terms is:

| 1  -1  7 |

| 0  -1 17 |

| 3  -2 14 |

= 1(-1*14 - 17*(-2)) - (-1*7 - 17*3) + 7*(2*(-2) - (-1)*(-2))

= 60

Therefore, the solution to the system of equations is:

makefile

Copy code

x = -67/20

y = -140/20

z = 60/20

x = -3.35

y = -7

z = 3

Hence, the solution to the system of equations is x=-3.35, y=-7, z=3 using Cramer's method.

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WRITE Describe how to add and subtract polynomials using both the vertical and horizontal methods.
To add polynomials in a horizontal method, combine coefficients
polynomials in standard form
For the vertical method, write the
✓align like terms in columns, and combine like terms. To subtract
of the polynomial that is being subtracted,
polynomials in a horizontal method, find the additive inverse
and then combine like terms. For the vertical method, write the polynomials in standard form, align like terms in
columns, and subtract by adding the additive identity

Answers

To add polynomials in a horizontal method, combine like terms. For the vertical method, write the polynomials in standard form and align like terms in columns, and combine like terms. To subtract polynomials in a horizontal method, find the negative (opposite)  of the polynomial that is being subtracted and then combine like terms. For the vertical method, write the polynomials in standard form, align like terms, and subtract by adding the negative (opposite).

What is the polynomials  about?

To add polynomials vertically,  one need to write them in standard form and align like terms in the columns. Combine like terms and add them to the polynomial.

Therefore, note that Polynomials are seen as expressions with variables and coefficients. Combine or subtract like terms when adding or subtracting them.

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WRITE Describe how to add and subtract polynomials using both the vertical and horizontal methods.

To add polynomials in a horizontal method, combine  ----- For the vertical method, write the polynomials in  --------  align like terms in columns, and combine like terms. To subtract polynomials in a horizontal method, find the ------ of the polynomial that is being and then combine like terms. For the vertical method, write the polynomials in standard form, align like terms and  and subtract by adding the  -------

22. which of the following is false? (a) a chi-square distribution with k degrees of freedom is more right-skewed than a chi-square distribution with k 1 degrees of freedom. (b) a chi-square distribution never takes negative values. (c) the degrees of freedom for a chi-square test is deter- mined by the sample size. (d) p(c2 > 10) is greater when df

Answers

The false statement is (a) a chi-square distribution with k degrees of freedom is more right-skewed than a chi-square distribution with k+1 degrees of freedom.

In fact, as the degrees of freedom increase, the chi-square distribution becomes less skewed and approaches a normal distribution. Statement (b) is true, a chi-square distribution never takes negative values. Statement (c) is generally true, the degrees of freedom for a chi-square test are determined by the sample size minus one. Statement (d) is incomplete, as there is no specified value for df. The larger the degrees of freedom, the smaller the p-value for a given chi-square value.

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5. A woman pays $2.78 for some bananas and eggs. If each banana costs $0.69 and each egg costs $0.35, how many eggs and how many bananas did the woman buy

Answers

If a woman pays $2.78 for some bananas and eggs. If each banana costs $0.69 and each egg costs $0.35, then she bought 4 bananas and 6 eggs.

Let's assume the woman bought x bananas and y eggs.

According to the problem, each banana costs $0.69 and each egg costs $0.35.

So the cost of x bananas would be 0.69x and the cost of y eggs would be 0.35y.

The total cost of the bananas and eggs is given as $2.78. So we can write the equation:

0.69x + 0.35y = 2.78

Now we need to solve for x and y.

We can start by multiplying the entire equation by 100 to get rid of the decimals:

69x + 35y = 278

We can also simplify the equation by dividing both sides by 1 (which doesn't change the equation):

69x/1 + 35y/1 = 278/1

Now we can use a system of equations to solve for x and y.

Let's solve for y in terms of x by isolating y on one side of the equation:

35y = 278 - 69x

y = (278 - 69x)/35

Now we can substitute this expression for y into the original equation:

0.69x + 0.35((278 - 69x)/35) = 2.78

Simplifying this equation, we get:

0.69x + 8 - 2x = 2.78

Solving for x, we get:

0.69x - 2x = 2.78 - 8

-1.31x = -5.22

x = 4

So the woman bought 4 bananas.

Now we can substitute this value for x into the expression we derived for y:

y = (278 - 69(4))/35

y = 6

So the woman bought 6 eggs.

Therefore, the woman bought 4 bananas and 6 eggs.

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How do you distribute an exponent (X-2y)2

Answers

Answer - the terms inside of the parentheses is multiplied by itself = x^2 - 4xy + 4y^2

Given (x - 2y) ^2

(x - 2y )( x - 2y)

x^2 - 4xy + 4y^2

Help please. How many roots and what are they?

Answers

The function f(x) = 3x³ - 2x² - 2x + 3 has one root and the root is x = 1

How many roots and what are the roots?

From the question, we have the following parameters that can be used in our computation:

f(x) = 3x³ - 2x² - 2x + 3

Next, we plot the graph of the function f(x)

See attachment

From the graph, we can see that the graph intersects with the x-axis once at x = -1

This means that it has one root and the root is x = 1

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Let a,b and c be three positive integers. Find a formula for lcm(a, b, c).

Answers

LCM stands for "Least Common Multiple". It is the smallest positive integer that is a multiple of two or more numbers

To find a formula for the least common multiple (LCM) of three positive integers a, b, and c.

The formula for LCM(a, b, c) is:
LCM(a, b, c) = LCM(LCM(a, b), c)

To find the LCM of two numbers, you can use the formula:
LCM(a, b) = (a * b) / GCD(a, b)
where GCD(a, b) is the greatest common divisor of a and b.

So, to find the LCM(a, b, c), follow these steps:

1. Calculate GCD(a, b)
2. Calculate LCM(a, b) = (a * b) / GCD(a, b)
3. Calculate GCD(LCM(a, b), c)
4. Calculate LCM(a, b, c) = LCM(LCM(a, b), c) = (LCM(a, b) * c) / GCD(LCM(a, b), c)

That's the formula and the step-by-step process to find the LCM of three positive integers a, b, and c.

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Find the largest number of 2 digits which is a perfect square

Answers

81 is the largest number of two-digit which is a perfect square.

Perfect squares are those integers that result from multiplying any number by itself.

1, 4, 9, 16, 25, 36, 49, 64, 81, and 100 are the numbers.

Therefore, there exist 17 two-digit numbers whose digit sums are squares.

The greatest number among those that form a perfect square must be found.

We are aware that the initial number of perfect squares is 100. Furthermore, it is a perfect square of 10.

The number whose square will appear is obviously going to be fewer than 10 today.

The square of 9, which is written as 9²=81, is the first number before 10, so let's start there.

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Quasilinearization Method
Q10-) Give some examples for the maximal solution and minimal
solution of first order IVP.

Answers

The Quasilinearization Method is a technique used to approximate solutions for nonlinear differential equations by linearizing them iteratively. It is particularly helpful when solving first-order IVPs.

A maximal solution to a first-order IVP is a solution that exists on the largest possible interval, while a minimal solution exists on the smallest possible interval.

Example 1:
Consider the first-order IVP: dy/dt = y^2, y(0) = 1.

Maximal solution: The maximal solution to this IVP is y(t) = 1/(1 - t) on the interval (-∞, 1).

Minimal solution: The minimal solution is the same as the maximal solution for this example, as there are no other solutions that exist on a smaller interval.

Example 2:
Consider the first-order IVP: dy/dx = x + y, y(0) = 0.

Maximal solution: The maximal solution to this IVP is y(x) = -x + e^x - 1 on the interval (-∞, +∞).

Minimal solution: The minimal solution is the same as the maximal solution for this example since there are no other solutions that exist on a smaller interval.



In both examples, the Quasilinearization Method can be applied to linearize the differential equations and approximate the solutions. The maximal and minimal solutions represent the largest and smallest possible intervals where the solutions are valid.

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