The diameter of a circle is 10 centimeters. find the length of the radius. type a numerical answer in the space provided. do not include any symbols, labels or spaces in your answer.

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).