Abox is filled with 5 red crayons , 9 blue crayons and 6 yellow crayons . a crayon is chosen at random for the box find the probability that it is a red or blue crayon

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles. i'm desperate.

Select the quadratic that has root x = 8 and x = -5

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.