Apipe is at least 21 feet long, and you want to cut it into three pieces. the second piece is to be twice as long as the first piece, and the third piece is to be 1 foot longer than the second piece. what is the minimum length of the first piece?

The minimum length of the first piece is 4 feet.

Explanation

Suppose, the length of the first piece is feet.

The second piece is twice as long as the first piece. So, the length of the second piece feet.

Now the third piece is 1 foot longer than the second piece. So, the length of the third piece feet.

Given that, the total length of the pipe is at least 21 feet. So, the inequality will be .....

Thus, the minimum length of the first piece is 4 feet.

it should be a and d. lmk if i'm wrong xd

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0