Step-by-step explanation:

Answer:
-7/2 or -3.5
Step-by-step explanation:
Make the equation first
7x-1 = 5x-8
7 = -2x
-7/2 = x
Complementary angles are angles that add up to 90 degrees.
Obtuse angles are greater than 90 degrees, so there's no way
to add two of them together and get a sum that's smaller than
either one already is.
The answer to the question is 'No'.
Answer: 25%.
Step-by-step explanation:
5/20= 0.25 or 25%
It's not possible to know, because you're not letting us see
the accompanying right triangle.