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The length of a rectangle is twice the width; the perimeter is 42 inches. Find the width.

Answers

Answer 1

Answer:

Answer:

Length = 14, Width = 7

Step-by-step explanation:

Step 1:

Length + Length + Width + Width = Perimeter

Step 2:

2w + 2w + w + w = 42

Step 3:

6w = 42

Step 4:

w = 7

Step 5:

7 × 2 = 14

Answer:

Length = 14, Width = 7

Hope This Helps :)

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If Point M has a coordinate of -1 and MN = 7, what are the possible coordinates of point N?

Solve the inequalityCould you please be fast I only have q hour to finish and I still have a bunch of questions to finish

Answers

Let's solve the inequality

$\begin{gathered} -x\leq15-2x \n 2x-x\leq15 \n x\leq15 \end{gathered}$

Therefore the solution of the inequality is the set:

$(-\infty,15\rbrack$

Write an equation in slope-intercept form for the line that passes through (4,5) and parallel to the to the line described by y=5x+10

Answers

Answer:

$y = 5x-15$

Step-by-step explanation:

Parallel ⇒ So the slopes will definitely be equal

So,

Slope = m = 5

Now,

Point = (x,y) = (4,5)

So, x = 4, y = 5

Putting these in the slope intercept form to get b

$y = mx +b \n$

5 = (5)(4) + b

5 = 20 + b

b = -20+5

b = -15

So, Putting m and b in the slope intercept form to get the required equation,

$y = 5x-15$

The parallelogram shown below has an area of 15 units^2Find the missing height.

Answers

Answer:

I do believe the answer is 5: 15/3=5 and the height should be equal to the side of the parallelogram

Step-by-step explanation:

I feel nice today, Here is 100 points

Answers

Answer:

oh well thanks

Step-by-step explanation:

Thank you sooo much l!!!!!

What is the slope of the line that goes through the points (6, 4) and (8, −2)? A. −6 B. −3 C. − 1 3 D. 3

Answers

Answer:

B -3.

Step-by-step explanation:

The slope = (y2-y1)/(x2-x1)

= (-2-4)/(8-6)

= -6/2

= -3.

You can use both the t statistic and the z statistic to test hypotheses about the mean of population. The test that uses the t statistic is typically referred to as a t test, while the test that uses z statistic is commonly called a z test. Which of the following statements are true of the t statistic? Check all that apply. The t statistic uses the same formula as the z statistic except that the t statistic uses the estimated standard error in the denominator. The t statistic provides an excellent estimate of z, particularly with small sample sizes. The formula for the t statistic is t = (M – μ) / σM. The t statistic does not require any knowledge of the population standard deviation.

Answers

Using the concepts of the t-statistic and the z-statistic, it is found that the correct option is:

The t-statistic does not require any knowledge of the population standard deviation.

The z-statistic is given by:

$z = (X - \mu)/((\sigma)/(√(n)))$

In which:

X is the sample mean.
$\mu$ is the population mean.
$\sigma$ is the population standard deviation.
n is the sample size.

The standard error is $S_e = (\sigma)/(√(n))$ .

The t-statistic is similar to the z-statistic, the difference is that the sample standard deviation is used, not the population. Thus:

$t = (X - \mu)/((s)/(√(n)))$

In which:

X is the sample mean.
$\mu$ is the population mean.
$s$ is the sample standard deviation.
n is the sample size.
The standard error is $S_e = (s)/(√(n))$ .

For large sample sizes, the sample and population standard deviations are close, thus t is a good estimate of z.

Thus, the correct option is:

The t-statistic does not require any knowledge of the population standard deviation.

A similar problem is given at brainly.com/question/16194574

Answer:

Detailed elaborated answer is given below:

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