Answer:
Step-by-step explanation:
To find the inverse, switch x and y, then solve for y
y=2^3-5x
x=2^3-5y
x-2^3=-5y
-(x/5)+((2/3)/5)=y
The triangle is a obtuse triangle
a = -1
Combine like terms 6a + 5a = 11a
11a = -11
Divide -11 by 11
-11/11 = -1
