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OpenStudy (anonymous):
why is 0.57 a rational number?
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OpenStudy (joehoffy):
if you can put it in a fraction, and it is repeating, then it is a rational number.
OpenStudy (jadedry):
In this case, because it has a finite number of "repeating" decimals. An irrational number is one that has infinite, non-repeating decimals, like Pi.
OpenStudy (anonymous):
thx guys
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