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Earn +20 ptsQ: What is the definition of rational number and whole number?
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Why is negative 8 a rational number?
Any whole number can be written as a fraction, with the whole number in the numerator, and the number one in the denominator. Compare this to the definition of "rational number".
Can a rational number be written as a fraction?
Yes, by definition. A rational number is one that can be written as a ratio (hence rational) of two whole numbers. And a ratio of two whole numbers is a fraction.
What is the definition of irrational?
A rational number is one that can be expressed as a ratio of two whole numbers (like a fraction). An irrational number is a real number that is not rational.
Is two-ninths a rational number?
If it can be expressed as a ratio of whole numbers ... like "two out of nine" ... then it is by definition a rational number.
A whole number that is not an rational number?
Every whole number is rational.
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