Remember that straight lines are 180°. For #1 angle 1 would be 40°, since 140°+40°=180°
Answer:-13
Step-by-step explanation:
-8 + b^2 - 5 - b^2
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-13
Answer:
90
Step-by-step explanation:
Just put down no solution. It's unsolvable.
Answer:
X=75
Y=110
Step-by-step explanation:
A straight line is 180, so add the equations that make a line and set them equal to 180
x+20+x+10=180
Combine like terms
2x+30=180
Subtract 30 from both sides
2x=150
Divide by 2
X=75
Same for y
y+y-40=180
2y-40=180
Add 40 to both sides
2y=220
Divide by 2
Y=110
