Cheryl compared 3/7 4/4 1/9 and 5/8 which statements are correct check all that apply

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

In angle pqr find the measure of

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq