Answer:
2a^2b^4
Step-by-step explanation:
 
        
             
        
        
        
Answer:
132 
Step-by-step explanation:
easy  66,000 * .002
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Remark
The angles are marked as alternate interior angles. To be parallel, they must be equal. In other words x - 20  must equal 52. That's all you have to do. Just equate the 2 givens and solve.
Givens
x - 20 is one angle
52 is the other.
Solution
x - 20 = 52                   Add 20 to both sides.
x - 20 + 20 = 52 +20   Combine
x = 72
Answer: C
 
        
             
        
        
        
Answer shown and explanation above! Hope this helps!