Which equation has the correct sign on the product? O A. (-12)4 = 48
B. (-9)(-9) = -81
O C. 31(-10) = -310
O D. 26 • 3 = -78

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?