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Earn +20 ptsQ: Is 81 rational or inrational
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Is -81 is rational or irrational?
81*81 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
Is sqrt 81 a irrational number?
No because the square root of 81 is 9 which is a rational number
Is the square root of 81 a rational number?
Yes. It's +9 and -9. They're both rational.
Is the square root of 81a rational number?
Yes. The square root of 81 is 9, which is a rational number.
Is -81 an irrational number?
No, -81 is not an irrational number because it can be represented in the form x/y = -81
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