Behind you there is a sneeze. You don't know it at the time, but this begins a chain reaction of flu that ripples through the school It starts with only 20 students but the number infected grows every day at a rate of 10% How many people are infected at day 24.

Secant be and cf intersect at point d inside a what is the measure of cde

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.

Solve 2x − 1 = 11 for x using the change of base formula log base b of y equals log y over log b.