In the diagram below, AB and BC are tangent to Oo. Which equation could be solved to find x, the measure of AC?
58. B
238"
= x
A. 2 (238 + 58) =
B. (238 + x) = 58
C. }(238 - 58)
D. }(238 - x) = 58
= x

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?