All categories

3 years ago

Please answer and explain why.

Mathematics

1 answer:

castortr0y [4]3 years ago

7 0

0,3,5,7,8 because it would make it higher pls heart and good luck !

You might be interested in

I will give 100 points to the first answer that is correct

matrenka [14]

Answer: D) 32

Each side of the cube is 8 units, so the perimeter of one side is 4*8 = 32.

8 0

4 years ago

Read 2 more answers

A researcher is interested in estimating the savings account balance of customers at a large bank. She obtains the savings accou

a_sh-v [17]

Answer:

The 95% confidence interval for the true mean length of the shafts is ($3402.08, $4142.75).

Step-by-step explanation:

A (1 - α)% confidence interval for true mean (μ), when the population standard deviation is known is:

$CI=\bar x\pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$

If the population standard deviation is not known, then the confidence interval for true mean is:

$CI=\bar x\pm t_{\alpha/2, (n-1)}\frac{s}{\sqrt{n}}$

A 95% confidence interval for true mean is an interval estimate of the population mean. The interval has 0.95 probability of consisting the true value of the population mean.

It is provided that the 95% confidence interval for mean, based on a sample of size 30 is ($3402.08, $4142.75).

This interval implies that the true mean value is between $3402.08 and $4142.75 with 95% confidence.

Thus, the 95% confidence interval for the true mean length of the shafts is ($3402.08, $4142.75).

7 0

4 years ago

Which ordered pairs are solutions to the inequality 2x+y>−4?

hichkok12 [17]

we will proceed to resolve each case to determine the solution

we have

$2x+y>-4$

$y>-2x-4$

we know that

If an ordered pair is the solution of the inequality, then it must satisfy the inequality.

case a) $(5,-12)$

Substitute the value of x and y in the inequality

$-12>-2*5-4$

$-12>-14$ ------> is True

therefore

the ordered pair $(5,-12)$ is a solution of the inequality

case b) $(-3,0)$

Substitute the value of x and y in the inequality

$0>-2*-3-4$

$0>2$ ------> is False

therefore

the ordered pair $(-3,0)$ is not a solution of the inequality

case c) $(-1,-1)$

Substitute the value of x and y in the inequality

$-1>-2*-1-4$

$-1>-2$ ------> is True

therefore

the ordered pair $(-1,-1)$ is a solution of the inequality

case d) $(0,1)$

Substitute the value of x and y in the inequality

$1>-2*0-4$

$1>-4$ ------> is True

therefore

the ordered pair $(0,1)$ is a solution of the inequality

case e) $(4,-12)$

Substitute the value of x and y in the inequality

$-12>-2*4-4$

$-12>-12$ ------> is False

therefore

the ordered pair $(4,-12)$ is not a solution of the inequality

Verify

using a graphing tool

see the attached figure

the solution is the shaded area above the line

The points A,C, and D lies on the shaded area, therefore the ordered pairs A,C, and D are solution of the inequality

7 0

4 years ago

Read 2 more answers

Which exponential function has a growth factor of One-half?

Gemiola [76]

Answer:

An exponential function with a growth factor of 1/2 would have 1.5^x as part of it.

The exponential growth function is as follows.

r is the rate of growth (0.50)

3 0

2 years ago

Maths Oder of rotations symmetry and number of lines of symmetry

drek231 [11]

Answer:

i) a) 4 lines

b) 1 line

c) 3 line

d) 2 line

ii) don't know

7 0

3 years ago