45% of the students who take part in a creative writing competition are boys. If 135 boys take part in the competition, find the total number of students who take part in the competition

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%

Abcd is a square. what is the measure of angle bac

Combine like terms to make a simpler expression 3z+z