Answer:
7
Step-by-step explanation:
8+9=17 -10 = 7
 
        
                    
             
        
        
        
Answer:
6
Step-by-step explanation:
 
        
             
        
        
        
Answer:
11^-12 or 11 to the power or negative twelve 
Step-by-step explanation:
11^-4  / 11 ^ 8
according to the laws of indices, when dealing with powers, division is subtraction. so:
-4 - 8 = -12
answer = 11^ -12
 
        
                    
             
        
        
        
Answer:
Its 4 
Step-by-step explanation:
You would have to do the formula for finding slope 
y2-y1/x2-x1 
 
        
             
        
        
        
Answer:
-21
Step-by-step explanation: