Can somebody help me please! I’ll make you branilest answer.

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !