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3 years ago

Someone please answer this for me

Mathematics

1 answer:

Alenkinab [10]3 years ago

4 0

Diameter 4m, radius is half,

Radius Answer: 2 m

Volume is

V = (4/3)πr³ = (4/3)π 2³ = (4/3)π(8) = (32/3) π

Answer: 32/3 (× π cubic meters)

You might be interested in

What number has 3 ones, 8 tens, and 5 hundreds?

PtichkaEL [24]

Answer:

C: 583

Step-by-step explanation:

5(100)+8(10)+3(1)

500+80+3= 583

Hope this helps! :)

4 0

3 years ago

a sports team donates 157 tickets to a sporting event,with tickets to be shared equally among 9 classrooms.How many tickets does

Valentin [98]

Answer:

Each class should get 17 tickets. 4 tickets will be left over.

Step-by-step explanation:

157/9=17.444... -> 17 per class

17 x 9 = 153

157-153= 4 left

5 0

3 years ago

Find the slope of this line

asambeis [7]

Answer:

5/2

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What is the value of the expression below when y 8 and z = 8? 9y + 3z

aleksley [76]

Answer:

Step-by-step explanation:

8y+3z

9(8)+3(8)

72+24

6 0

3 years ago

Suppose that a jewelry store tracked the amount of emeralds they sold each week to more accurately estimate how many emeralds to

RUDIKE [14]

Answer:

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

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

And for this case the 95% confidence interval is given by (2.13; 2.37)

We have a point of estimate for the sample mean with this formula:

$\bar X = \frac{Upper+ Lower}{2}= \frac{3.37+2.13}{2}= 2.75$

And for the margin of error we have the following estimation:

$ME= \frac{Upper -Lower}{2}= \frac{3.37-2.13}{2}= 0.62$

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

$\mu$ 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:

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

And for this case the 95% confidence interval is given by (2.13; 2.37)

We have a point of estimate for the sample mean with this formula:

$\bar X = \frac{Upper+ Lower}{2}= \frac{3.37+2.13}{2}= 2.75$

And for the margin of error we have the following estimation:

$ME= \frac{Upper -Lower}{2}= \frac{3.37-2.13}{2}= 0.62$

5 0

3 years ago