If 15 is 5% of p, what is 12% of p?

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Write the fraction or mixed number and the decimal shown by the model

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?