D. -15
All I did was plug the numbers in
The expression (n+3) represents the measure of an exterior angle of a regular octadecagonal.
Answer:
Step-by-step explanation:
<h3>Given </h3>
- Points A(-1,7) and B (11,-1)
<h3>To find</h3>
<h3>Solution</h3>
<u>Using midpoint formula</u>
- x = (-1 + 11)/2 = 10/2 = 5
- y = (7 -1)/2 = 6/2 = 3
Midpoint is (5, 3)
Answer: Y=-1
Step-by-step explanation: Hope this helps The picture is for X=
-Lily ^_^
Plzz mark brainliest