Answer:
21st `day
Step-by-step explanation:
3*3*3*3*3*3*3=21
7*7*7=21
21 is the lcm of 3 and 7
the angle measures in the regular polygon is B)140
I believe it would be 4
This is because when divided by 3, 3x+12y=3 turns into x+4y=3
The other person is literally wrong. The answer is D. Supplementary because two angles that add up to 180 are supplementary angles.
