They are same side exterior angles meaning they are supplementary and supplementary means they add up to 180 so.....
2y+34+74=180
2y+108=180
2y=72
y=36
Substitute 36: 2(36)+34=106
106+74=180
180=180
Answer:
associative property
Step-by-step explanation:
this is because in order to simplify it you must combine like terms. the like terms are <em>associated </em>with eachother
Answer:
Y= 4x...Hope this helps!
Step-by-step explanation:
(10 + y)² - y² = 3x + 12
(10 + y)·(10 + y) - y² = 3x + 12
10² + 20y + y² - y² = 3x +12
100 + 20y = 3x + 12
100 - 12 = 3x - 20y
3x - 20y = 88
3x - 20 y - 88 = 0 (I suppose it is that one, simplifyied and in order of the letters, or that it you at the previous step)
Answer: x=4
Step-by-step explanation: