Answer:
60
Step-by-step explanation:
p = 180 - [ 360 - ( 130 + 110 ) ]
= 180 - [ 360 - 240 ]
= 180 - 120
p = 60
15a-7b+4c+3a+6b-12c
=18a-b-8c
Answer: 37
a=12
35 < b < 40
I can answer 2-19.
The first equation is x=0.
the second equation has no solution.
Domain: (-∞,∞), Range: [2,∞)
