Who knows where this is from 20 points

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

Given: klmn is a parallelogram m? n=3m? k, lf ? kn , ld ? nm kf=2 cm, fn=4 cm find: lf, ld

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?