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liberstina [14]
3 years ago
5

Which of the following is a rational number?

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
5 0
The square root of 81 is rational since it equals 9. Rational numbers can be expressed as a fraction of two integers. The fraction here would be 9/1, hence it is rational. The others are not perfect squares and can’t be expressed as a fraction of two integers.
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