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3 years ago

Need help with this question plz picture of question added

Mathematics

1 answer:

allochka39001 [22]3 years ago

8 0

Answer:

The domain of the function is (-2,&)

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Bedroom has a perimeter of 46 feet. If the length is 11 feet, what is the width?

rjkz [21]

Perimeter is L+W+L+W=2L+2W by definition
L=11 so 46=2*11+2W
46=22+2W
46-22=2W
24=2W
W=24/@
W=12

4 0

3 years ago

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Solve these equations. 1. -16 = v - 14 2. -2n = -22 3. 25 = b + 7

leonid [27]

1) -16 = v - 14

Add 14 to both sides.

v = -2

2) -2n = -22

Divide both sides by -2.

n = 11

3) 25 = b + 7

Subtract 7 from both sides.

b = 18

6 0

3 years ago

A fast food restaurant executive wishes to know how many fast food meals teenagers eat each week. They want to construct a 99% c

Lana71 [14]

Answer:

The minimum sample size required to create the specified confidence interval is 2229.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.99}{2} = 0.005$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.005 = 0.995$ , so $z = 2.575$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

What is the minimum sample size required to create the specified confidence interval

This is n when $M = 0.06, \sigma = 1.1$

$0.06 = 2.575*\frac{1.1}{\sqrt{n}}$

$0.06\sqrt{n} = 2.575*1.1$

$\sqrt{n} = \frac{2.575*1.1}{0.06}$

$(\sqrt{n})^{2} = (\frac{2.575*1.1}{0.06})^{2}$

$n = 2228.6$

Rounding up

The minimum sample size required to create the specified confidence interval is 2229.

7 0

3 years ago

What is 4^3*4^2*8^3 PLEASE I NEED HELP ASAP!!!!!!!

mars1129 [50]

524288 is the answer have a good day

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3 years ago

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If ACFE = APTR, then ZF =

lord [1]

Than Zf will equal prt or irt

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3 years ago

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Need help with this question plz picture of question added ​

Need help with this question plz picture of question added