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3 years ago

If the following rectangular prism's width is doubled, what will happen to the volume?

Mathematics

2 answers:

ArbitrLikvidat [17]3 years ago

5 0

Answer:

Possibly b

Step-by-step explanation:

IM pretty sure because the width is around the volume

sorry if im wrong but im pretty sure that it is B

katrin2010 [14]3 years ago

5 0

Possibly B but I would have to see what the rectangular prisim looks like because the rest are exact numbers.

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This is the first year Janis is playing softball. She has been practicing her batting. On her last swing the bat made an arc wit

Aleksandr-060686 [28]

Answer:

a) 60π inches

b) 5π feet

Explanation:

The arc length of a circular sector is related to the swept angle by the proportion:

$\dfrac{arc\text{ }length}{2\pi \cdot radius}=\dfrac{angle}{360\º}$

Here you have:

arc length: ?
radius: 48 inches
angle: 225º

Substitute and solve for the arc length:

In inches:

$arc\text{ }length=\dfrac{225\º}{360\º}\times 2\pi (48in)}=60\pi$ inches

Convert to feet:

Use the conversion factor: 1 feet = 12 inches

$60\pi\text{ }in\times\dfrac{1ft}{12in}=5\pi ft$

6 0

4 years ago

10.

Kay [80]

Answer:

$\frac{(82)(2.4)^2}{104.139} \leq \sigma^2 \leq \frac{(82)(2.4)^2}{62.132}$

$4.535 \leq \sigma^2 \leq 7.602$

Now we just take square root on both sides of the interval and we got:

$2.2 \leq \sigma \leq 2.8$

And the best option would be:

A. 2.2 < σ < 2.8

Step-by-step explanation:

Information provided

$\bar X=32.1$ represent the sample mean

$\mu$ population mean

s=2.4 represent the sample standard deviation

n=83 represent the sample size

Confidence interval

The confidence interval for the population variance is given by the following formula:

$\frac{(n-1)s^2}{\chi^2_{\alpha/2}} \leq \sigma^2 \leq \frac{(n-1)s^2}{\chi^2_{1-\alpha/2}}$

The degrees of freedom are given by:

$df=n-1=83-1=82$

The Confidence is given by 0.90 or 90%, the value of $\alpha=0.1$ and $\alpha/2 =0.05$ , the critical values for this case are:

$\chi^2_{\alpha/2}=62.132$

$\chi^2_{1- \alpha/2}=104.139$

And replacing into the formula for the interval we got:

$\frac{(82)(2.4)^2}{104.139} \leq \sigma^2 \leq \frac{(82)(2.4)^2}{62.132}$

$4.535 \leq \sigma^2 \leq 7.602$

Now we just take square root on both sides of the interval and we got:

$2.2 \leq \sigma \leq 2.8$

And the best option would be:

A. 2.2 < σ < 2.8

3 0

3 years ago

How do you describe the end behavior of a graph?

timofeeve [1]

Answer:

The end behavior of a function [f] describes the behavior of the graph of the function [f] at the ends of the x-axis.

Step-by-step explanation:

I've done this last year and this is what I can come up with

7 0

2 years ago

it cost $102.50 to repair a plasma tv. if you pay $15 for new parts and $25 per hour for labour, how much time did it take to re

Nana76 [90]

Subtract the part from the total:

102.50 - 15 = 87.50

Now divide the remainder by rate:

87.50 / 25 = 3.5 hours

7 0

3 years ago

How do I solve what is 3 and 3 fifths minus two thirds

stealth61 [152]

3 3/5 - 2/3

1-you convert 3 3/5 to an improper fraction (18/5)

2-then you find a common denominator between then (15)

3-then subtract

your answer would be 49/15

6 0

3 years ago