Answer:
-7
Step-by-step explanation:
There's no "x" in the equation, so there's nothing to plug in.  I don't know if you just forgot to type it, but for all numbers, it's gonna equal -7.  Even if there was an x, it would still equal -7.
 
        
             
        
        
        
Answer:
10
Step-by-step explanation:
1 2 3 4 5
1 shakes hands with 2,3,4,5
2 shakes hands with 3,4,5 but not with 1 because they already shook hands once
 similarly, 3 only shakes hands with 4 and 5, same reason as abov
4 with 5 only, same reason
 
        
                    
             
        
        
        
Answe5/4r:
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
length x width x height
1.5 yards x 4.5 yards x 7 yards
Step-by-step explanation:
47.25 cubic yards
 
        
                    
             
        
        
        
The second child is about 19lbsif you want to round it otherwise it's 18 something lbs, so the first child is about... 57.