Swimming 1/4 of miles uses about the same number of calories as running 1 mile?

one swims 5 miles a day. about how many miles would he have to run to use the same number of calories use during his swim.

The line containing the midpoints of the legs of right triangle abc where a(-5,5), b(1, 1), and c(3, 4) are the vertices.

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

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?