45 degrees! The angles of a triangle always add up to 180. The other two add up to 135. 180-135 is 45.
Answer: The answer is -2
Step-by-step explanation: positive and a positive is a positive, but, a positive and a negative is a negative.
If f(x) = 3x - 12 and x = 9
then substitute 9 in place of x
f(9) = 3(9) - 12
f(9) = 27 - 12
f(9) = 15
