Step-by-step explanation:
Because 2x and 40° are complementary angles.

Answer:
90-66=24
Step-by-step explanation:
We know that she spent $39, and has 3/4 of the original amount left. Our goal is to find the original amount. We can use the equation. x - 39 = 3/4x. Once we subtract x on the left hand side, we get -39 = -1/4x. Once we multiply -39 by -4, we get 146. She originally had $156.
Answer:
-5
Step-by-step explanation:
Answer:
Yes, A, B, C, is correct the answer to question