D because a straight line is 180 degrees. Since 2x+15 and 65 add up to a straight line (180 degrees) in the picture, the answer is D.
Answer:
100-40=m Answer:60
Step-by-step explanation:
Answer:
728
Step-by-step explanation:
2+6+18+...+486
a=2
r=6/2=3
B. (4, 4) is a solution to the equation.