Solve the quadratic by taking square roots round to the nearest tenth
2x^2-9=121

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.

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

How many terms does the polynomial x^2 y^2 have