Two pyramids are similar to each other. Their base edges are in a ratio of 3:5. Find the ratio of their surface areas.

The track team ran a mile and a quarter during their practice how many kilometers did her team runs?

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15