An ad on tv claims that 70 of doctors interviewed chose brady's asprin as the leading medicine to cure minor aches. if 20 doctors were interviewed, how many chose bradys? 10 , 14 , 15 , or 20

Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- 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. 3- 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 part b?

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0