Expression the represents the difference of 32 and n multiplied by 10

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

In the rectangle below ac=30 units what is de

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?