Seventy-two percent of all observations fall within one standard deviation of the mean if the data is normally distributed. a. True b. False

For each proportion find the unknown number x 1/5/8=×/15

Divide. write in simplest form 41/6 divided by 10

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so