Answer:
m is equals to 49 degree + 31 degree so which means it's 80°
You would need to change the slope to -6 because perpendicular lines have opposite reciprocal slopes.
Answer:

Explanation:
Let's begin writing down everything
(X×(-11)+5)×(-9)+X-55
Now we can multiply
-9(-11X+5)+X-55
99X-45+X-55
And so we get
100X-100
Factorize 100
100(x-1)
Answer: 22
Step-by-step explanation:
4 - (-18) = 4 + (+ 18) = 22