So let's find the Force of the elevator pressing upward. So F=ma We found the mass above and we are told that the acceleration is +.50 m/s^2 so the
Force of the elevator is the mass found above times .50
788
750
38
O 712

1)is not similar since corresponding sides are not in the same ratio

2)are similar since corresponding sides are in the same ratio and corresponding angles are equal

hope it will

#faazmessi

9x

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8