Acube has a face area of 64 square centimeters. what is the volume of the cube?

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

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?