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It is a whole number so it is rational.

1.2667

The square root of the prime number 19 is an irrational number

It is a whole number so it is rational.

No. √19 is an irrational number.

It is a rational number because it is an integer that can be expressed as an improper fraction

No because 19 is a whole number which means that it is a rational number

It is a rational number because it can be expressed as a fraction in the form of -19/1

-19 is a rational number, since it can be expressed in fraction form (-19/1).

Yes because all fractions are rational numbers whereas irrational numbers can't be expressed as fractions.

No, it is a rational number because -19 can be expressed in the form of a/b as -19/1

3.8 is a rational number because it can be expressed as a fraction in the form of 19/5

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