18+45m because 9x2=18 and 9x5m=45m
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
Let the length of the fence = x
Let the width of the fence = y
  Recall that the perimeter of a rectangle is calculated by 2(L+B) , but the farmer is using the side of the barn on one side of the rectangle , so the perimeter equation is  
x + 2y = 48
  Area = xy
  If we substitute the perimeter equation so that the area is only in terms of y.
  
Area = (48 - 2y)y
Area = 48y - 2
  Now just find the vertex of the parabola
  Area = -2  + 48y
+ 48y
A = -2  + 48
 + 48
Differentiate A with respect to y
 = -4y + 48
 = -4y + 48
equate it to zero , we have 
-4y + 48 = 0
4y = 48 
y = 12
Substitute y = 12 into equation 1, we have
x = 48 - 2y
x = 48 - 2(12)
x = 48 - 24
x = 24
Therefore the dimensions of the garden are 24 by 12
The maximum area is 288 square unit
 
        
             
        
        
        
Answer:
3 dolla
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
the anser is d thank you for leting me anser have a good day
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
4.4
Step-by-step explanation:
10.6 + x = 15
x = 15 - 10.6 = 4.4