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4 years ago

The perimeter of a rectangular field is 302 yards. If the width of the field is 65 yards, what is its length?

Mathematics

1 answer:

Molodets [167]4 years ago

7 0

Answer:

L= 86 yards

Step-by-step explanation:

Perimeter = 2length + 2width

So,

302= 65(2) + 2(L)

302= 130+2L

-130

172=2L

Length= 86

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3 years ago

A civil engineer is analyzing the compressive strength of concrete. Compressive strength is normally distributed with σ = 31.62

AysviL [449]

Answer:

A sample size of at least 737 specimens is required.

Step-by-step explanation:

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Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

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Now, find the width M as such

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In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

In this problem, we have that:

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So:

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4 years ago

The perimeter of a rectangular field is 302 yards. If the width of the field is 65 yards, what is its length?​

The perimeter of a rectangular field is 302 yards. If the width of the field is 65 yards, what is its length?