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Viefleur [7K]
3 years ago
9

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

an 13 hours. The formula C = 100 + 80Y + 3Y2 relates the cost C of completing this operation to the square of the time to completion. The mean of C was found to be found to be 2,154 hours and the variance of C was found to be 10,440,820.
Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
5 0

Answer:

Reference The length of time Y necessary to. ... construction of houses has an exponential distribution with mean 10 hours. The formula C = 100 + 40Y + 3Y 2 relates the cost C of completing this operation to ... Find the mean and variance of C. ... The length of time necessary to complete a key operation in the construction of ...

Step-by-step explanation:

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svp [43]

Answer:

Option A - 10

Step-by-step explanation:

Given : There are 3 red chips and 2 blue chips. If they form a certain color pattern when arranged in a row, for example RBRRB.

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Solution :

Total number of chips = 5

So, 5 chips can be arranged in 5! ways.

There are 3 red chips and 2 blue chips.

So, choosing 3 red chips in 3! ways

and choosing 2 blue chips in 2! ways.

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The total pattern is given by,

T=\frac{5!}{3!\times 2!}

T=\frac{5\times 4\times 3!}{3!\times 2}

T=10

Therefore, color patterns are possible are 10.

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4 0
3 years ago
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Answer:

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Step-by-step explanation:

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Then

∠ 1 = 5x + 9 = 5(20) + 9 = 100 + 9 = 109°

∠ 2 = 3x + 11 = 3(20) + 11 = 60 + 11 = 71°

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Step-by-step explanation:

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