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Nikitich [7]
3 years ago
6

The height and radius of a right cylinder are each 8 cm. What is it’s volume?

Mathematics
1 answer:
denis23 [38]3 years ago
7 0

Try this solution:

1. The formula for calculation of the volume of the cylinder is V=π*r²*h, where r - the radius of the base, h - the height of the cylinder.

2. According the formula above:

V=π*64*8=512π (cm³).

Answer: 512π

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kirill115 [55]
<h2>Answer with explanation:</h2>

Let p represents the population proportion.

By considering the given information, we have

H_0: p=0.29\\\\H_a: p\neq0.29

∵ the alternative hypothesis is two tailed , so the test is two-tailed test.

Given : For sample size :n= 130,  \hat{p}=0.23

Test statistic: z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

z=\dfrac{0.23-0.29}{\sqrt{\dfrac{0.29(1-0.29)}{130}}}\\\\=-1.50762993902\approx-1.51

P-value (two -tailed test)=2P(z>|-1.51|)=0.1310434\approx 0.131

Since , the p-value (0.131) is greater than the significance level (0.03), so we accept the null hypothesis.

Thus , we conclude that we have sufficient evidence to support the null hypothesis  that the true population proportion of Maryland students who have smoked marijuana is 29% .

5 0
3 years ago
Seperate 90 into two parts so that one part is four times the other
aalyn [17]

Answer:

18 and 72

Step-by-step explanation:

the smaller part can be assigned as x while the larger will be 4x. Both numbers need to add up to 90, giving the equation: 4x+x = 90

Solve:

4x+x = 90

5x = 90

x = 18

4x = 72

5 0
2 years ago
-3/5b+7+2/5b=19 please answer
ikadub [295]

Step-by-step explanation:

here your answer

above photo is your answer

7 0
2 years ago
The sum of two numbers is 34. The smaller number is 6 less than the larger
kotykmax [81]
16 and 22 are ur numbers
6 0
3 years ago
Joey went to the top of a mountain which was 20000 feet above sea level. Then Joey tripped and fell into the ocean and hit the b
solmaris [256]

Answer:

Step-by-step explanation:

Your answer

Top of mountain = 20000 feet

Bottom of sea = 3000 feet

Difference = 20000+3000= 23000 feet

Mark it as Brainlist answer. Follow me.

7 0
3 years ago
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