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4 years ago

12

Which of the following angles can be trisected using only a compass and straightedge?

1 answer:

ZanzabumX [31]4 years ago

6 0

I'm pretty sure it is C. 45 because compass and straightedge is a right angle or an acute angle and 45 is less than a right angle

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3 years ago

A drill is used to dig down into the earth. After 2 hours, the drill is 12 meters below the surface. After 5 hours, the drill is

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4 years ago

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True.

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3 years ago

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The length of time Y necessary to complete a key operation in the construction of houses has an exponential distribution with me

Butoxors [25]

Answer:

0.16

Step-by-step explanation:

Given that the length of time Y necessary to complete a key operation in the construction of houses has an exponential distribution with mean 18 hours.

The formula for cost of completing this operation is

$C = 100 + 60Y + 3Y^2$

C has mean 3124

Var(C) = 28,460,160

Std dev (C) = $\sqrt{28460160} \\=5334.81$

X = 4000 hours

Difference = $4000-3124 = 876$

Mean diff/std dev = $\frac{876}{5334.81} \\=0.164$

i.e.nearly 0.16 standard deviations above the mean is 4,000 hours

4 0

3 years ago