Answer:
 . In other words, there number of girls is
. In other words, there number of girls is  .
.
Step-by-step explanation:
The average of a number of measurements is equal to the sum of these measurements over the number of measurements.
 .
.
Rewrite to obtain:
 .
.
For this question:
 .
.
 .
.
Therefore:
 .
.
On the other hand, there are  boys and girls in total. Using the formula for average:
 boys and girls in total. Using the formula for average:
 .
.
From the question, this average should be equal to  . In other words:
. In other words:
 .
.
Solve this equation for  to obtain:
 to obtain:
 .
.
 .
.
 .
.
In other words, the number of girls here is  .
. 
 
        
             
        
        
        
Answer:
-4
explanation:
since there is subtraction sign in front of the negative 2 it would change into a positive 2.
-6 + 2 = -4
 
        
                    
             
        
        
        
Answer:
Answer is 3 
Step-by-step explanation:
x/3-2x/1+3 =x-3/5
x/3-x/3 = x-3/5
0=x-3/5
0=x-3
3=x
sothat, x = 3 ans
 
        
             
        
        
        
1. set up the equation which makes these shapes equal, 1/2(2(x+1)) = 1x
2. solve, x+1=x, 1=0
3. since this is impossible, there is no solution and zero answers
 
        
             
        
        
        
Answer: 40
Step-by-step explanation:
You first start by multiplying 15 times 16 to see how many ounces you have. 
15 x 16 = 240
Then you divide it by 6
240/6 is 40
So you can make 40 burgers