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bcalle
this is 5 and 1 tenth
5 and 1/10 or   51/10
Yes it is a rational number because it is a terminating decimal

amelia18
The answer is 51/10 .
5.1/1 times 10/10= 51/10.
5.1 it's a rational number because it can expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q.

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