Square root are the same 2 numbers multiplied.
Ex: 8*8=64 (Square root is 8)
9*9=81 (Square root is 9)
2.2360679775*2.2360679775=5
Answer=2.2360679775
 
        
             
        
        
        
I assume you're looking for the number:
0.5n + 9 = 21
- 9
0.5n = 12
÷ 0.5
n = 24
So the beginning number is 24, hope this helps!
        
             
        
        
        
Answer:
118,692
Step-by-step explanation:
 
        
             
        
        
        
Answer:
780
Step-by-step explanation:
round up to the nearest ten