Answer:
idk how to do that try to slove it 
but I didn't get right answer
 
        
             
        
        
        
Answer:
-6
Step-by-step explanation:
13+(-19)  (distribute "+" sign into parentheses)
= 13-19
= -6
 
        
             
        
        
        
No, because one x-value corresponds to two different y-values
        
                    
             
        
        
        
Answer:
3
Step-by-step explanation:
9= 3*3
42=3*7*2
 
        
             
        
        
        
Answer:
x = 17.2 
Step-by-step explanation:
since they are supplementary, when you add then together they equal 180
4x + 8 + 6x = 180
Combine like terms
10x + 8 = 180 
subtract 8 from both sides
10x = 172
divide each side by 10
x = 17.2 
hope this helps :)