Arturo is building a flower bed in the shape of a right triangle. the hypotenuse of the right triangle is 13 feet. one of the legs needs to be 7 feet longer than the other leg. which equation can be used to find x, the length of the shorter leg? x(x 7) = 13 x(x 7) = 169 x2 (x 7)2 = 13 x2 (x 7)2 = 169