11. In a recent year, about 38% of all infants born in a country were conceived through in-vitro fertilization (IVF). Of the IVF deliveries, about twenty-eight percent resulted in multiple births. 2870
(a) Find the probability that a randomly selected infant was conceived through IVF and was part of a multiple birth.
(b) Find the probability that a randomly selected infant conceived through IVF was not part of a multiple birth.
(c) Would it be unusual for a randomly selected infant to have been conceived through IVF and to have been part of a multiple
birth? Explain.

2 x t divided by n

step-by-step explanation:

i believe the answer is d.

hope it you! : d

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240