Give an example of two monomials with a quotient of -3n^2 / m

Can someone me and plz do the problem

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

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?