Answer:
an=7n-19
(the last one)
Step-by-step explanation:
Answer:
x=-2, y=8. (-2, 8).
Step-by-step explanation:
8x+5y=24
y=-4x
----------------
8x+5(-4x)=24
8x-20x=24
-12x=24
x=24/-12
x=-2
y=-4(-2)=8
It would be helpful if you could post a photo so I can look at the context. Thank you
126 + x + x = 180
126 + 2x = 180
2x = 54
x = 27
So both the congruent angles measure 27.
Hope this helps :)