In 2004 about $38 out of every $100 spent on advertising was spent on television advertising. the amount spent on radio advertising was about 21% as much as was spent on television advertising. how much of every $100 spent on advertising was spent on radio advertising?

Acylinder and its dimensions are shown. which equation can be used to find v, the volume of the cylinder in cubic centimeters?

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?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'