It can be written as 5 x 10^ -11 or 0.5 x 10^ -10
Hope it helps.
 
        
             
        
        
        
Given:$7/child
$10/adult
Total people = 700
Total money = $6,400
First, make two equations.
Let a = # of adults & Let c = # of children.
Let p = total people
1.      a+c = 700
2.  10a+7c = 6,400
Then, rearrange the equation to solve for a variable.
c = 700-a
Substitute (700-a) for c, or the # of children in the second equation.
10a+(700-a) = 6400
9a+700 = 6400
9a+700-700 = 6400-700
9a = 5700
9a/9 = 5700/9 
a = 633 = # of adults attended
  = # of adults attended700-633

 = c =
 66  = # of children attended
 = # of children attended
 
        
             
        
        
        
Answer:
$20.00 dollars will be the new cost.
Step-by-step explanation:
Multiply $12.50 and 60% to get $7.50.
$7.50 plus $12.50 is $20.00.
 
        
             
        
        
        
there would be a 14 percent chance of you or your friend winning
 
        
                    
             
        
        
        
Answer: is 0
Step-by-step explanation: