Mrs. johnson wants to divide the star girl essays for each of her periods. she wants each pile to have the same numbers of essays but not mix essays from different periods into any pile. she has 36 essays for 1st period, 48 essays for 2nd period, 24 essays for 3rd period and 60 essays for 4th period. what is the largest number of essays she should put in each pile?

Runners run around the school's football field. the cross country coach determines that the width of the field is seventy yards shorter than the length. part a write an expression that represents the perimeter of the football field. let x represent the length of the football field. include parentheses in your expression. next, write an equivalent expression that does not include parentheses. what property or properties did you use to simplify? explain. part b the cross country coach later determines that the length of the football field is 120 yards. all students must run five laps. using your answer from part a, determine the actual number of yards that each athlete must run in the tryouts. in order to make the team, students must complete the laps in 6 minutes. how quickly must they run each lap?