Systems of linear equations

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

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?

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?