Line segment cd is the perpendicular bisector of line segment ab which statement shows why ae be?

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?

The data set represents the ages of players in a chess club. 27, 34, 38, 16, 22, 45, 54, 60. what is the mean absolute deviation of the data set?