Answer:
[tex]\sqrt{31}[/tex]
Step-by-step explanation:
A.[tex]-5 \frac{4}{11} =\frac{-59}{11}[/tex]
Since it in in p/q form so it is a rational number
B. [tex]\sqrt{31} =5.5677643.......[/tex]
Since it cannot be represented in the form of p/q . So, it is irrational number .
C. 7.608
[tex]\frac{7608}{1000}[/tex]
Since it can be represented in p/q form . So, it is rational number.
D. 18.46...
18.4666.. Since 6 is repeating in decimal place . So, 18.46.. can be written in p/q form .
Hence Option B sqrt of 31 is not a rational number .
