A+b= 17
a-b=3
a=10
b=7
That is the answer
The answer is 15 but if they get one wrong then 14 is the answer if i get this wrong i am sorry
X² - 8x = 9
x² - 8x - 9 = 0
x² + x - 9x - 9 = 0
x(x + 1) -9(x + 1) = 0
(x+1)(x-9) = 0
x = -1 or 9
In short, Your Answers would be -1 & 9
Hope this helps!
This is Complementary angle
Measure of Complementary angles is 90°




