11. 23x2, 6х
What is the greatest common factor

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?

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')