If x and y are positive integers for which 2x3x=2592, what is the value of x+y?

Standard deviation of 19,29,21,22,23

Which number line represents the solution set for the inequality - x 24?

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.