You see how these 2 angles marked are both inside the 2 parallel lines?
And they are on opposite side of the transversal, the line crossing the 2 parallel lines?
These 2 angles are alternate interior angles and they are equal, I think you can do the last part by yourself.
Answer: 
Step-by-step explanation:
Use the power rule for differentiation.
Answer:
I don't really know but I will help you if I can
Answer:
-267
Step-by-step explanation:
this is because 11 ×2=22,22+3=25,25×-9= -225 and then the other bracket when I solved I had 42 and so -225-42 = -267
Answer:
Step-by-step explanation:
-2x-14+10x=34
8x-14=34
8x=48
x=6