Hello!
I believe the answer is C.
I hope it helps!
 
        
                    
             
        
        
        
Answer:
2229 thanks, merry early Christmas
 
        
             
        
        
        
He would need a 93% on his fourth exam.
94+89+96+93= 372, 372 divided by 4= 93
        
             
        
        
        
There are many solutions. But what do you mean with a perfect square of a number. I thought a number IS a perfect square or not.
For example, the difference between 2² and 4² = 12, which is twice the number 6, which is √36
The difference between 2² and 6² = 32, which is twice the number 16, which is a perfect square.
So choose depending on your interpretation of the question... ;-)
        
             
        
        
        
Answer:
45cm or 9cm are all the possible lengths