730% as a fraction or mixed number in simplest form?

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

Aramp rises 4 feet over a distance of 10 feet. what is the length of the ramp?

Rewrite the polynomial -9x5 + 36x4 + 189x3 in factored form.