Answer:
b = -9 
Step-by-step explanation:
1. Move the variables to the left side. Be sure to change the terms (add/subtract)
-9b-6 = -3b+48
-9b+3b-6 = 48
2. Combine like terms. 
-9b+3b-6 = 48
-6b = 48 + 6
3. Divide both sides by -6.
-6b = 54
b = -9
 
        
                    
             
        
        
        
Answer:
here
Step-by-step explanation:
15x-20x= -82+12=>
=> - 5x= -70=>
= x= 14
 
        
             
        
        
        
15x-10=20
 +10 +10
15x=30
\15 /15
x=2
you add 10 to both -10 (they cancek eachother out) and 20 (equals 30) 
Then you divide 30 by 15 (equals 2) and 15 by 15 (they cancel eachother out) 
Then you get x=2
        
                    
             
        
        
        
Divide then multiply by 100:
280 / 3500 = 0.08
0.08 x 100 = 8%
Answer: 8%
 
        
                    
             
        
        
        
Answer:
Its 72Pi. (Option C)
Step-by-step explanation:
Took it on Edge and got it right