What value of a makes the equation true
18/60=12/a

a 30
b 4
c 20
d 40

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

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?

Which compound inequality could be represented by the graph?