180°. The answer is 180° because it is a straight line rather than being curved/bent.
Answer:

That is what the expression would be
Answer:
B.) 2 3/4 + (-4 1/4) = -1 2/4
Step-by-step explanation:
blue line: forward with positive +
red line: backward with negative -
so the number line follows:
+ -
= -1 2/4
Answer:
3 sqrt 5
Step-by-step explanation:
diameter talks about the center of the circle..and the middle of the circle lies between 3 and 5