Step-by-step explanation:
Since, r varies directly as s

 
        
                    
             
        
        
        
Answer:
x=6
Step-by-step explanation:
-4(2x-3)=-36
-8x+12=-36
-8x=-48
x=6
 
        
             
        
        
        
Both are similar, so Yes. 
-All the sides of the squares are equal 
-The triangles are also the same, just one is smaller. The one on the right is 2/3 of the one on the left.
        
             
        
        
        
Answer: 777600
Step-by-step explanation:
you times 12 by 4 then you times 3000 by 5.4 and add the two answers