1. find the square root of the following numbers. a) 81 b) 110 c) 19 d) 67 e) 180 2.which of the following are not a perfect square ? a) 16 b) 235 c) 190 d) 1100 e) 400

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:

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16