matajose809 matajose809 08-12-2020 Mathematics contestada Choose all the expressions that will result in a positive answer. a. -3 + - 9 = b. a(b) = c. -43 - (-55) = d. -3 x -9 = e. 4 x 9 x -3 x -1 x 12 = f. (-3 + 4) x -5 =
