Supplementary and adjacent. 
Two angles are called supplementary when their measures add up to 180 degrees.
Adjacent angles are two angles that have a common vertex and a common side but do not overlap.
        
                    
             
        
        
        
14n=-126
/14 /14 divide by 14 on both sides of the 
equation
n=-9
 
        
                    
             
        
        
        
In order to determine the expression that should be multiplied to n^2 to get 5n^3, divide 5n^3 by n^2. First for the numerical coefficient, 5 divide 1 is 5. For the variable n, n^3/n^2 is n. Thus, the term that should be multiplied to n^2 is 5n. 
        
             
        
        
        
Answer:
90
Step-by-step explanation:
 
        
                    
             
        
        
        
Multiples ! By the patagrium there!!!!!