Answer:
   72
Step-by-step explanation:
First differences are ...
   18 -17 = 1
   22 -18 = 4
   31 -22 = 9
   47 -31 = 16
We observe that these are square numbers. The next square number is 25, so we expect the next number in sequence to be ...
   47 +25 = 72
 
        
             
        
        
        
Answer:
I know a little of this
Step-by-step explanation:
ok so what you do is for example take both of the small equation with the same variable and equal them to each other then plug in to the other
ex. 7x-31 =5x-8 solve this the plug what you get into the y in equation 4(y) +27
 
        
             
        
        
        
Answer:
The Answer is 47
Step-by-step explanation:
Because you do A squared plus B squared equals C squared and Squared is just multiplying both by two.
 
        
             
        
        
        
Answer: -3
Step-by-step explanation:
 
        
             
        
        
        
The answer is D: 6 The hyp is twice the size of the shorter leg