There were 1200 boys at a school assembly. the ratio of boys to girls at the assembly was 20: 23. how many girls were at the assembly?

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

The pyramid shown has a square base that is 24 centimeters on each side. the slant height is 16 centimeters. what is the lateral surface area?

Which expression and diagram represent “renee biked four times as far this month as last month”?