Answer:
12
Step-by-step explanation:
5 : 6  = Number of boys to girls
(We have to ×2 to get from 5 to 10 so we must ×2 from 6 to 12)
10 : ? = Number of Boys to girls
10 : 12 = Number of Boys to girls
 
        
                    
             
        
        
        
Answer:
jsjsid sjdic8fnw jv 8djw efjiw eifwjiffjw djfivieo UK 
 
        
             
        
        
        
Answer:Bridget
Step-by-step explanation:
Apex
 
        
             
        
        
        
Answer:
The area that was not painted is 
Step-by-step explanation:
step 1
Find the area of the rectangle
we know that
The area of a rectangle is equal to

In this problem we have


substitute

step 2
Find the area that was painted

step 3
Find the area that was not painted
Subtract the area that was painted from the total area of rectangle
so

 
        
             
        
        
        
Answer:
5n
Step-by-step explanation:
cost of one helmet = $5
let 'n' be the number of person that is n=1,2,3,4........
note that the value of n is always a natural number 
therefore the expression = 5n 
where 5 is the cost one helmet
n is the number of persons