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What is Is 2.9 a Rational Number? about?
2.9 is a rational number. A rational number can be represented as a fraction p/q where p and q are integers and q is not equal to 0. 2.9 terminates after the decimal place so its decimal expansion is finite, and it can also be represented as the fraction 29/10. Rational numbers are either repeating or terminating decimals, while irrational numbers are non-repeating and non-terminating like π. Therefore, since 2.9 terminates and can be written as a fraction, it is a rational number.
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