Answer:
i guess its 1...
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
a its a
Step-by-step explanation:
 
        
             
        
        
        
Consider number 17. You know that
17=9+8.
Then for negative numbers you have the same rule (with respect to sign -):
-17=(-9)+(-8).
Since (-9)+9=9+(-9)=9-9=0, you have that 
-17+9=(-9)+(-8)+9=(-9+9)+(-8)=0+(-8)=-8.
Answer: -17=(-9)+(-8).
 
        
             
        
        
        
Answer:
y = 20
Step-by-step explanation:
-3y+12 = -48 .        -12 from both sides
-3y = -60 .              ÷3 on both sides
y = 20
 
        
                    
             
        
        
        
Answer:
 41.13 cm 
Step-by-step explanation:
ITSSSS RIGHTTTTTTTTT