Answer:
1080°
Step-by-step explanation:
formula to find the sum of interior angles of a polygon is (n-2)×180
octagon has 8 sides so n=8
(8-2)×180
6×180
=1080°
I say D you should probably wait for another answer though
2/9=22%
21%
21%
22%
So it would be 21%, 0.21, 11/50, 2/9.
Y= -2 - (the square root of) 21 and Y= -2+ (the square root of) 21
I believe but I am not too sure.