Melissa and Trina are training for a marathon. This week, Melissa ran 3 fewer than twice as many miles as Trina. Together they ran 39 miles this week. Write and solve an equation to determine how many miles Trina ran.

22 points algebra 1//sum and product of rational and irrational numbers. dont have to do all 4 if could much : )) write an example: 1) how the product of two identical irrational numbers can be a rational number. 2) how the product of two different irrational numbers can be a rational number. 3) write a quotient of intergers that is not a real number. 4) is the set of positive irrational numbers closed for the operation of division? if not give a counter example.