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Soloha48 [4]
4 years ago
8

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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asambeis [7]

Answer:

The temperature is 50^{\circ}F

Step-by-step explanation:

Given

F= (C*1.8) + 32

Required

Find F when C = 10

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Answer:

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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:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.99}{2} = 0.005

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

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