(f+g)(x) is 3x^2 + 3x/2 - 9
(f+g)(x)=f(x)+g(x)=x/2-3+3x^2+x-6= 3x^2 + 3x/2- 9
Supplementary angles add up to 180 degrees
ratio of 1:4.....added = 5
1/5(180) = 180/5 = 36 <=== smaller angle
4/5(180) = 720/5 = 144 .... larger angle
7n+5=5n+25 subtract 5n from both sides
2n+5=25 subtract 5 from both sides
2n=20 divide both sides by 2
n=10
An 180-degreee rotation would return the square to its original position.
