The answer is B....................................................................................
The answer is B. -a+4+5a-a-6
<h3>Check out the diagram below for the proper labeling</h3>
The radius goes from the center to the edge of the circle.
The diameter is twice as long as the radius; it is a segment going through the center with both endpoints on the circle
The circumference is the distance around the circle. Think of it as the perimeter of the circle.
Answer:
3x+9=180(angles on a line
3x=180-9
3x=171
x=171/3
x=57