A map saying that 4 centimeters represent 10 kilometer what is the real distance that 18 centimeters represents

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse