Question

One of two complementary angles has a measure that is five times that of the other. Which equation could be used to find x, the degree measure of the smaller angle?
A) 5x=90
B) x+5x=90
C) 5x=180
D) x=5x=180

I chose A but I wasn't sure if I was correct. Could someone please tell me if I am right or not.

Answer 1

B is the common answer, so I choose B

Answer 2

So, for the bigger angle, the equation is 5x. It can't be A because that would be solving for the larger angle. You can't pick C or D either because the angle is complementary, meaning the two angles equal 90 degrees. So, that leaves you with B: x + 5x = 90 which is the correct answer. Sorry this response was almost 8 years late...I was only 5 when you asked the question.