If rectangle JKLM has sides JL=3x+4 and KM=4x-1, how do you find the lengths of the diagonals?

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

Angela took a general public aptitude test and scored in the 88th percentile for aptitude in accounting. what percentage of the scores were at or below her score?

Tanyss's house has 25 windows. her brother has washed 22 of the windows. what percent of the windows has her brother washed?