Answer:
D. slope: 3
y-intercept: -3
Step-by-step explanation:
Complementary angles are those angles whose sum is 90 degree.
The measurement of two complementary angles are

There sum have to be 90 degree. That is

Combining like terms ,

Moving 20 to right side

Dividing both sides by 5

So the measurement of the angles are

Answer:
D.
Step-by-step explanation:
The formula is Sum(n) = (n -2) 180.
Answer:
2
Step-by-step explana
(6x-y+4)*2= 12x -2y+8= (3x+9x)-(2y-8)