Answer:
z=55
Step-by-step explanation:
The two angles form a straight line which is 180 degrees
80 + 2z-10 = 180
Combine line terms
70 +2z = 180
Subtract 70 from each side
70-70 +2z= 180 -70
2z = 110
Divide by 2
2z/2 = 110/2
z = 55
We have

First, we can combine like terms 3y and -7y to get -4y.
Then, we have

We could then subtract 8 on both sides to get

Finally, we isolate y completely by dividing both sides by -4, to get
Answer: The following triangles are congruent.
Awe thanks.
I like....
3 birds (bob Marley)
Lucy (skillet)
Step into my life (powfu)
Answer: Irrational
Step-by-step explanation: