Given:
M(4,2) is the midpoint of AB and A(-5, -3).
To find:
The coordinates of B.
Solution:
Let the coordinates of point B are (a,b).
Midpoint formula:

M(4,2) is the midpoint of AB and A(-5, -3).


On comparing both sides, we get




And,




Therefore, the coordinates of point B are (13,7).
 
        
             
        
        
        
I think it is 395.20 / 5 = 79.04, rounded down to 79
        
                    
             
        
        
        
The length of side can be calculated as 
<span>s = √40 
   = √4x10 
   = 2√10</span>
        
                    
             
        
        
        
1. 5+4
2. 7+2
The answer is 9.
I hope I helped! :)
        
                    
             
        
        
        
Answer: ummm
Step-by-step explanation: