Answer:
The second answer choice, 85
Step-by-step explanation:
That is a 180 degree angle, and the entire angle must add up to 180 degrees. 55+40=95, 95+85=180
We need to set up an equation where all 3 terms (x, 55°, and 40°) add up to equal 180.
Here is how we do it:
[tex]x + 55 + 40 = 180\\\\x + 95 = 180\\\\x = 85[/tex]
The answer is B: 85°.
