What is the product please help ASAP

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?

What is the measure of sty in oo below? 130 310 230 50

What is the location of point g, which partitions the directed line segment from d to f into a 5: 4 ratio? –1 0 2 3