if u awnser! given the perimeter of a rectangle and either the length or width, find the unknown measurement using the appropriate formula. the perimeter is 76 cm and the length is 20 cm. what is the width of the rectangle? show all your work.

The formula of a perimeter of a rectangle l × w:

P = 2l + 2w

We have the perimeter P = 76 cm and the length l = 20 cm. Substitute:

76 = 2(20) + 2w

76 = 40 + 2w    subtract 40 from both sides

36 = 2w     divide both sides by 2

18 = w

width = 18 cm.

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560

the football players are volunteering for the test.

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