you can compare the length of sides of both the triangles...
 
        
                    
             
        
        
        
18bags 
Look if 1=3 2=9 3= 18  so he uses 18 bags!
        
             
        
        
        
Answer:
5.63
Step-by-step explanation:
Angle NLM is equal to KLM - KLN. 
Since KLM = 137° and KLN = 47°, NLM = °90. (Maybe it doesn't look like a right angle, but the math doesn't lie.)
Since NLM = 16y, then 90 = 16y.
Dividing both sides by 16, we find that:
y = 5.625
 
        
                    
             
        
        
        
The distance between two points is calculated through the equation,
                                 d = √(x₂ - x₁)² + (y₂ - y₁)²
Substituting the known values from the given above,
                                d = √(4 - -4)² + (4 - -4)²
                                  d = 8√2 = 11.31
The distance between the points is approximately equal to 11.31. The value that Jason presented is not the real distance because it does not account for the other set of coordinates. 
        
             
        
        
        
Answer:
(9 + 11) /(5 + 4 + 1)(9 + 11) 
20/10(20)
20/200
1/10