Answer:
24
Step-by-step explanation:
Let the number be x.
Sum of the number and 6: 
Divide it by 3: 
Result is 4 more than one quarter of the number:

Multiply both sides by 12:

Simplify:

Expand:

Subtract 24 from both sides:


Subtract 3x from both sides:


The number is 24.
 
        
             
        
        
        
36, 16, 81, and 64 are all of your perfect squares.
If you need me to explain, just let me know! :)
        
                    
             
        
        
        
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The relative frequency of it landing on tails is 20/30 or 2/3 or 0.667
        
                    
             
        
        
        
The answer is 25 which is by multiplying 4/10 and 5/x and the devide by 4