Which number is not a rational number? a.-5 4/11 b. sqrt of 31 c. 7.608 d. 18.

Step-by-step explanation:

A.

Since it in in p/q form so it is a rational number

B.

Since it cannot be represented in the form of p/q . So, it is irrational number .

C. 7.608

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 .

h/o/e/s mad

step-by-step explanation:

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