In a trapezoid ABCD with legs AB and CD, the diagonals intersect each other at point O. Prove: OA⋅OB=OC⋅OD

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up

Which statement shows that 6.24 is a rational number? a. 6.24 = 6.242424 b. 6.24 = 6.24 c. 6.24 = 68⁄33 d. 6.24 = 66⁄25