8.1 :
1. 19/50 = 0.38 = 38%
2. 13/20 = 0.65 = 65%
8.2 :
3. 3/5 = 0.6 = 60%
4. 62.5% = 0.625 = 5/8
5. 0.24 = 24% = 6/25
6. 31/50 = 0.62 = 62%
7. 7/10 = 0.7 = 70%
8.3 :
8. 12 = 0.30x......12/0.30 = x......x = 40 <==
9. 0.45(20) = 9 <==
10. 18/30 = x/100......30x = 1800...x = 60% <==
11. 56 = 0.80x....56/0.80 = x.....70 <==
cant see the rest
        
             
        
        
        
Answer:
-4<1
Step-by-step explanation:u divide by 2 on both sides
 
        
                    
             
        
        
        
Answer:
yes u no
Step-by-step explanation:
 
        
             
        
        
        
Answer:
For as far as I know -6=a-4+b
Step-by-step explanation:
The (-4,-6) are coordinates like (X,Y) now the formula your using is y= ax+b. So the only thing you have to do is fill X and y in from the coordinates into the formula.
 
        
                    
             
        
        
        
Answer:
Subtraction property of equality
Step-by-step explanation:
The subtraction property of equality refers to balancing an equation by using the same mathematical operation on both sides.