Atrapezoidal pyramid has a volume of 3168 cubic cm, and its height is 36 cm. the lengths of the two bases of the trapezoidial base are 20 cm and 28 cm. what is the height of the trapezoidal base? round to the nearest tenth.

Rename mixed numbers before you can subtract are what

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

Which of the following expressions is equal to 2x^2+8