Let's say that y is the unknown
180=2x+3+5x+1+y
180=7x+4+y
180-7x-4=y
176-7x=y=third angle
81 cent.........................................................
Answer:
Are you graphing?
Step-by-step explanation:
Answer:
y=2
Step-by-step explanation: horizon shows where the dotted line crosses the y axis