Classify the following numbers as rational or irrational with jus… - Vidyadip

Question

Classify the following numbers as rational or irrational with justification: $-\sqrt{0.4}$

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Answer

$-\sqrt{0.4}=-\sqrt{\frac{4}{10}}=-\sqrt{\frac{2}{10}}$ Hence, it is a quotient of rational and irrational numbers, so it is an irrational number.

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