Rational. equals 12
irrational. =4✓3
rational. equals 5
rational. equals 21
        
             
        
        
        
HI THERE LET ME HELP U WITH YOUR QUESTION
**PERFECT SQUARES ARE POSITIVE INTEGERS**<span>
</span>THE NUMBERS CANNOT INCLUDE ITSELF AND ALWAYS SHOULD HAVE A ONE IN IT. 
2.89 AND 0.004 ARE PERFECT NUMBERS. THEY INCLUDE 1 AND THEY DONT INCLUDE ITSELF
HOPE IT HELPS  
 
        
             
        
        
        
Answer:
4.817+9.099+17.008=30.924
484.603-48.198=436.405
Estimation 5+9+17=31
485-48=437
Just round each decimal to the nearest whole number and add or subtract
 
        
                    
             
        
        
        
Answer:
If you want to spend no less than $40, and you want to spend twice as much on the first gift (gift x), you can spend $26 on gift x. On the second gift (gift y), you can spend $13. You will spend a total of $39 on both gifts which is less than $40 and have spend twice as much on the first gift as you did the second ($13 x 2= $26).
 
        
             
        
        
        
Answer:
45
40 percent (calculated percentage %) of what number equals 18? Answer: 45.