Answer:
Step-by-step explanation:
Yes it is 
 
        
                    
             
        
        
        
Answer:
shade 10 boxes for 50%
Step-by-step explanation:
50%=50/100=1/2
1/2 of 20=10
:. To shade 50% of the boxes, 10 boxes need to be shaded
 
        
             
        
        
        
Answer:-523/52
Step-by-step explanation:
 
        
             
        
        
        
Answer is 2 x 4=8 this is a scientific property
        
             
        
        
        
It increases the mean value of the prizes.