What is the value of y in the solution to the system of equations? x + y = 1 2x – 3y = –30 a -3 b -8 c 8 d 3

i believe the answer is the polygon, heptagon.

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length

10

step-by-step explanation: