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denpristay [2]
3 years ago
14

A bird feeder is in the shape of a cylinder. It has a volume of about 100 cubic inches. It has a radius of 2 inches. What is the

approximate height of the bird feeder? Use 3.14 for pi. Math item stem image CLEAR CHECK 4 inches 8 inches 12 inches 79 inches
Mathematics
2 answers:
Lilit [14]3 years ago
8 0
8 inches because 3.14*2^2*8=100.48 which is rounded to 100
son4ous [18]3 years ago
3 0

Answer:

The approximate height of the bird feeder is 8\ in

Step-by-step explanation:

we know that

The volume of a cylinder is equal to

V=\pi r^{2}h

In this problem we have

V=100\ in^{3}

r=2\ in

substitute and solve for h

100=(3.14)(2^{2})h

100=12.56h

h=100/12.56=7.96=8\ in

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kvv77 [185]

Answer:

$77.18

Step-by-step explanation:

A = total amount

P = principal

I = interest

A = P(1 + r/n)^n·t

A = 70(1+.05)²

A = 70(1.05)²

A = 77.175

I = A - P

5 0
3 years ago
Read 2 more answers
The length of the United States flag is 1 9/10 times the width of the flag. A particular U.S. flag is 5 feet long. Write and sol
elena-14-01-66 [18.8K]

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Step-by-step explanation:

7 0
2 years ago
Sociologists say the percentage of the classic music lovers is about 5%. From the survey, we know that only 83 out of 2000 peopl
disa [49]

Answer:

p value from chi square = 0.081

Step-by-step explanation:

Given that sociologists say the percentage of the classic music lovers is about 5%. From the survey, we know that only 83 out of 2000 people listen to the classic music. Let denote the proportion of the classic music lovers. The hypotheses are H0: p=0.05 vs Ha: p≠0.05

p value = 0.09

Instead of this if we do chi square

H0: Proportion of music lovers is 5% and non music lovers is 95%

Ha: Proportions are not as per the estimate

(Two tailed chi square test)

Observed       83           1917       2000

Expected        100          1900     2000

O-E                  -17              17          0

chi square

(O-E)^2/E        2.89         0.1521     3.0421

df =1

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Though p value is not exactly the same, the conclusion in both tests are the same

5 0
3 years ago
At a country concert, the ratio of number of boys to the number of girls is 2:7. If there are 250 more girls than boys, how many
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Answer:

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Step-by-step explanation:

When changing the ratio between the number of boys to the number of girls, it always has to be equivalent to the original ratio 2:7

So, convert the ratio 2:7 to a different ratio, but it still has to be equivalent to the ratio 2:7. By doing that, multiply both sides of the 2:7 ratio by 50:

  2   :   7

×50   ×50

To get:

100:350  ⇒  This ratio means that the ratio between the number of boys to the number of girls is now 100:350, but that’s okay to have because it’s still equivalent to the original 2:7 ratio.

So, using the new ratio 100:350, this means that there are 100 boys at the concert and 350 girls at the concert, and 350 is 250 more than 100 which proves what the question is asking. So there are 100 boys at the concert.

<u>Answer:</u> 100 boys at the concert

<em>I hope you understand and that this helps with your question! </em>:)

7 0
2 years ago
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Answer:

17

Step-by-step explanation:

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3 years ago
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