Please answer this question it is due at 5:00

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

The two cylinders are similar. if the ratio of their surface areas is 9/1.44 find the volume of each cylinder. round your answer to the nearest hundredth. a. small cylinder: 152.00 m3 large cylinder: 950.02 m3 b. small cylinder: 972.14 m3 large cylinder: 12,924.24 m3 c. small cylinder: 851.22 m3 large cylinder: 13,300.25 m3 d. small cylinder: 682.95 m3 large cylinder: 13,539.68 m3

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer