Fiona and her dad love making paper airplanes. on saturday morning, fiona made 121212 paper airplanes, and her dad made 888 paper airplanes. that afternoon, they made more planes, which doubled their number of planes from the morning. at the end of the day, fiona her little brother make 333 more paper airplanes.

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Standard deviation of 19,29,21,22,23

Askateboard ramp is in the shape of a right triangle what is the height of the ramp