Julia can run 3/4 of a mile in 1/10 of an hour. what is her rate in miles per hour

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?

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?

Answer! if you don’t mind, can you explain