Simplify the expression
7r^3 (r^-2)^2 / 20(r^4)^-5

Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?

Which expression gives the exact value of x?

Prove the converse of the pythagorean theorem using similar triangles. the converse of the pythagorean theorem states that when the sum of the squares of the lengths of the legs of the triangle equals the squares length of the hypotenuse, the triangle is a right triangle. be sure to create and name the appropriate geometric figures.