a. What is the distribution of X? X~ N( b. Find the proportion of her laps that are completed between 130.02 and 131.67 seconds. c. The fastest 3% of laps are under seconds.

Q: How many solutions are there to the equation n^2-13n=-40? A. There are two real solutions B. There…

A: To determine the number of solutions of the below equation. n2-13n=-40

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A:

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A: COst function C(x) = 0.001x3+0.2x2+38x+250where x = no. of items producedNow, if x = 30 then C(x) =…

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A:

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A:

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A: Since you have posted multiple sub-parts of question , we will solve first three  sub-parts for you.…

Q: Can you please show how to solve for x and y in step 4.

A: We have to solve for x and y value given in step 4.

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A: Given: