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3 years ago

You need

Mathematics

1 answer:

Ymorist [56]3 years ago

8 0

Answer:

46 ft

Step-by-step explanation:

A = (pi)r^2

(pi)r^2 = 1661.06 ft^2

r^2 = 529 ft^2

r = 23 ft

d = 2r = 2(23) = 46 ft

Answer: 46 ft

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Step-by-step explanation:

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3 years ago

MATH

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Answer:

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2. x = 31

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Step-by-step explanation:

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3 years ago

A local mechanic charges customers a flat fee of $60 before any work is done and a rate of $85 per hour of labor which equation

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Answer:

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Step-by-step explanation:

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3 years ago

Which of these situations can be represented with an integer that, when combined with the opposite of 8, makes 0?

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1 year ago

Assume that the probability of a defective computer component is 0.02. Components arerandomly selected. Find the probability tha

solmaris [256]

Answer:

0.0177 = 1.77% probability that the first defect is caused by the seventh component tested.

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Step-by-step explanation:

Assume that the probability of a defective computer component is 0.02. Components are randomly selected. Find the probability that the first defect is caused by the seventh component tested.

First six not defective, each with 0.98 probability.

7th defective, with 0.02 probability. So

$p = (0.98)^6*0.02 = 0.0177$

0.0177 = 1.77% probability that the first defect is caused by the seventh component tested.

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Inverse binomial distribution, with $p = 0.02$

Expected number before 1 defective(n = 1). So

$E = \frac{n}{p} = \frac{1}{0.02} = 50$

Variance is:

$V = \frac{np}{(1-p)^2} = \frac{0.02}{(1-0.02)^2} = 0.0208$

The expected number of components tested before a defective component is found is 50, with a variance of 0.0208.

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3 years ago