Find the geometric mean of the numbers. If necessary, give the answer in simplest radical form. 7 and 28

What is the product of the radical expression. (7-2square root) (8+2 square root)

Solve this and show you’re work step by step ! -5 3/4+3h< 9 1/4 -

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?