Which of the following expressions is INCORRECT given the value for the variable n? A. 3n = 9, n = 3 B.24 ÷ n = 6, n = 4 C.50 - n = 40, n = 10 D.6 + n = 10, n = 1 btw need asap

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 fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?