The figure is a diagram of a wall. Lengths are given in feet.

Can someone pls ! pls answer all. no explanation needed..

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?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*