Answer:
359 is your answer
Step-by-step explanation:
Have a good day ;-)
 
        
                    
             
        
        
        
First you transform the expression and then evaluate the power
 
        
        
        
if you add 55% and 45% the total is 100% so 45/100 are girls.  35% of the girls scored and A  so 35/45  is the probability that it is a girl chosen or 7/9. the probability is 7 out of 9.
 
        
             
        
        
        
B+c+(c-b)+(b-c). That is your expression.  b 11 c 16
       
          First, let's convert the variables to real numbers:   11+16+(16-11)+(11-16)
             Now, let's solve that equation.                                    11+16+5+(-5)
                      5+(-5) cancels out, so all we have left is:                   27
                That is your perimeter.