Answer:
 A : 4x+5x=180 
Step-by-step explanation:
They form a linear pair which equals 180. 
 
        
             
        
        
        
The act was signed into law by President Chester A. Arthur.
 
        
             
        
        
        
Answer:
200,000 m
Step-by-step explanation:
We will multiply the length of the ant by the number of ants to find out how long the line is.
10 million is 10 with 6 zeros
20 * 10 ^-3   move the decimal 3 places to the left
20. * 10 ^-3  = .02
.02 * 10000000
200000
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
3x + 3
6 + 2x
3x + 2x = 5x
3 + 6 = 9
5x + 9