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2 years ago

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a piece of coal in a shape of a square pyramid has base edge pf 8.2 in on each side and with height of 5.3 in. What is the volum

e?

2 answers:

lozanna [386]2 years ago

4 0

Volume = 1/3a^2h

v= 1/3 x 8.2^2 x 5.3

v=118.79066666667 in^3

vredina [299]2 years ago

3 0

The volume is 43.46.

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A school has 3400 students. They conduct a random sample of 124 students and find that 38 of them hate the school.

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Answer:

a) We need a sample size of at least 2401.

b) We need a sample size of at least 1936.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.

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(b) you use the results from the surveyed school as a guideline.

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We need a sample size of at least 1936.

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2 years ago

The 16th term of an A.P. is 40 and the sum of the first 5 terms is 5. Find the sum of the first 50 terms.

KiRa [710]

Answer:

The sum of first 50 terms is 3425.

Step-by-step explanation:

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From -1 to 0, the function goes decreases, and from 0 to 1 the function goes increases. Then we will have the minimum between -1 and 1.

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Here we have the table:

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Please answer this correct

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Just a guess but I think it’s Option A

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