Solve the following equation algebraically x^2=50

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?

Find the value of x. give reasons to justify your solutions! l, m ∈ kn

52 cm radius = diameter = area = circumference = circumfer