Ask question

Ask question

All categories

3 years ago

8

Find the approximate volume of a cone with radius 10 inches and a vertical height of 24 inches. ANSWERS: 414,565 in3 2,513 in3 6

,529 in3 740 in3

1 answer:

OLEGan [10]3 years ago

7 0

Answer:2,513in3

Step-by-step explanation:

You might be interested in

Simplify radicals please

Angelina_Jolie [31]

Answer:

-24x^5 y^2 z^8 /3yz

8 0

2 years ago

ANSWER THIS FAST<br> BRANLIEST IS ON THE LINE in

seraphim [82]

Answer:

Option A.) is correct $\triangle XYZ \sim \triangle WVZ$ by AA similarity. There are two angles that are congruent given by $\angle ZXY = \angle ZWV \hspace{0.2cm} and\hspace{0.2cm} \angle ZYX = \angle ZVW$ .

This is because both pairs represent alternate interior angles formed by lines intersecting two parallel lines.

Step-by-step explanation:

From the given figure we can say that

i) Option A.) is correct $\triangle XYZ \sim \triangle WVZ$ by AA similarity. There are two angles that are congruent given by $\angle ZXY = \angle ZWV \hspace{0.2cm} and\hspace{0.2cm} \angle ZYX = \angle ZVW$ .

This is because both pairs represent alternate interior angles formed by lines intersecting two parallel lines.

4 0

3 years ago

You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard devia

Arturiano [62]

Answer:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (3)

$n=(\frac{2.58(54.5)}{5})^2 =790.846 \approx 791$

So the answer for this case would be n=791 rounded up to the nearest integer

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

Since the Confidence is 0.99 or 99%, the value of $\alpha=0.01$ and $\alpha/2 =0.005$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.005,0,1)".And we see that $z_{\alpha/2}=2.58$

The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (2)

And on this case we have that ME =+5 and we are interested in order to find the value of n, if we solve n from equation (2) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (3)

$n=(\frac{2.58(54.5)}{5})^2 =790.846 \approx 791$

So the answer for this case would be n=791 rounded up to the nearest integer

4 0

3 years ago

There are 96 children in a room.

Olenka [21]

Answer:

7/12

Step-by-step explanation:

Basically to find the boys fraction I subtracted 40 from 96 and got 56. Your answer for the number of boys would be 56/96. I divided 4 from each and got 14/24. lastly I divide by 2 and got 7/12.

5 0

3 years ago

Xiao bought 4<br>gallons of gas that cost $2.50 per gallon<br>What is the total cost of the gas?

djverab [1.8K]

Answer:

10

Step-by-step explanation:

If 1 Gallon Cost 2.5$ and He Bought 4, Then Multiply 2.5 with 4 and we get the answer which is 10....

5 0

3 years ago

Read 2 more answers