Answer:
5 students are left out in the arrangement.
Step-by-step explanation:
If the number of rows = the number of columns  
Then there must be an equal arrangement
Since the total number of students in the school is 2121
Then, the students that are left out in this arrangement = 2121 - (√2121 X √2121
Note the result of the square root would only consider the whole number, the digits after the decimal point signifies the remaining number that can't fit into the arrangement
so, √2121 = 46.05 (so 46 would be used)
= 2121 - (46 X 46)
= 2121 - 2116 = 5
Therefore 5 students are left out in the arrangement.
 
        
             
        
        
        
Answer:
63
Step-by-step explanation:
so y/3 - 9 = 12, add 9 on both sides and you get y/3 = 21. Then you multiply both sides by 3, y/3 * 3, the 3's cancel out, 21 * 3 = 63. You get y = 63
So basically just do + 9 on both sides then *3 on both sides (do it step by step)
 
        
                    
             
        
        
        
The degree is indicated by the highest exponent in the polynomial.  That degree is a 2.  And since we have only 1 term in this "polynomial", it is then a second degree monomial.  Third choice down.
        
             
        
        
        
Answer:
400 times 8%= 32 times 3=96
Step-by-step explanation: