What are the solutions of the equation x4 - 9x2 + 8 = 0? Use u substitution to solve.

In an experiment you are to flip a two sided coin 100 times and record 55 heads up and 45 tails up determine the theoretical and experimental probability of getting a heads up in the experiment.

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

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.