Answer:
the answer is 9×9 and -9×-9
 
        
                    
             
        
        
        
Answer:
168.61
Step-by-step explanation:
C=2*Pi*R
C=2*3.14*26.85
C=6.28*26.85
C=168.61
 
        
             
        
        
        
21,000-600 = 20,400
20,400/3400 = 6
t = 6
21,000=3,400(6)+600
21,000=20,400+600
21,000=21,000
34.00 
*6
__
204.00
3,400*6=20,400
        
             
        
        
        
Answer:
see below
Step-by-step explanation:
30
30 does not belong because it is not a perfect square
4: 2X2
9: 3X3
16: 4X4
25: 5X5
30: (some number not an integer) X (some number not an integer)
36: 6X6
49: 7X7