Given that AB BC, which of the following statements will not prove that ABD ZACBD?
A. If BD bisects ZABC, then A ABD ZACBD by SAS.
B. If AD CD, then AABD =ACBD by SSS.
C. If ZAZ ZC, then AABD ZACBD by SAS.
D. IF ZABD: ZCBD, then AABD=ACBD by SAS.

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 of these angles are complementary? a. 45o and 45o b. 63o and 117o c. 45o and 135o d. 90o and 45o

Me i’m stuck on all these questions besides the two bottom ones