Subtract 28.9 – 9.25 =

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

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?

Add the fractions and simplify 1/2+ 1/3