Use the triangle angle theorem:
All interior angles of a triangle equal 180 degrees.
If you use the theorem you should get the first one 19,70,91
Step-by-step explanation:
1.
(chain rule)
2 

Answer:
x+11=79
Step-by-step explanation:
Answer:
all real numbers or infinity
Step-by-step explanation:
this function is linear and linear functions always have an infinite domain and range