3 years ago

PLEASE HURRY!!!!!!!

Mathematics

1 answer:

Paraphin [41]3 years ago

7 0

Answer:

I am guessing Point D is the point in the middle of the rectangle.

x = 7.5

Step-by-step explanation:

DV is half of 66

DV = 33

33/4.4 = 7.5

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Answer:97 rods

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The number of steel rods for 95% confidence level

$n=\left ( \frac{Z_\frac{\alpha }{2}\times \hat{\sigma }}{E} \right )^2$

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3 years ago

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