In ΔMNO, the measure of ∠O=90°, MN = 99 feet, and OM = 26 feet. Find the measure of ∠M to the nearest tenth of a degree.

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.

Rob filled 5 fewer plastic boxes with football cards than basketball cards. he filled 11 boxes with basketball cards.

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities