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No - a square root of a negative number is an imaginary number. for example, sqrt(-9) is equal to 3i.

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โˆ™ 2012-05-22 20:54:26
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Q: Is the square root of -9 a rational number?
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Related Questions

Is the square root of 9 a rational or irrational number?

The square root of 9 is 3 which is rational.


Is the square root of 9 rational or irational?

The square root of 9 is 3 which is a rational number


Is the square root of 9 rational or irrational?

It is rational.The square root of 9 is 3 and it is a rational number


Is the square root of 81a rational number?

Yes. The square root of 81 is 9, which is a rational number.


Is 9 square root an irrational number?

The square root of 9 is rational.


Is the square of 81 a rational number?

The square root of 81 is 9 which is a rational number


Is the square route of 9 rational or irrational?

The square root of 9 is 3 which is a rational number


Is the square root of -9 a natural whole integer rational or irrational number?

It is none of those because the square root of -9 is an imaginary number but the square root of 9 is 3 which is a rational integer or whole number


Is the square root of 9 is rational?

Yes 3 is a rational number


Is squareroot of 9 rational or irrational?

The square root of 9 is 3 which is a rational number


Is the square root of 9 a rational number?

yes


Is the square root of 9 divided by the square root of 4 rational?

Yes, because the answer is 3/2 which is a rational number.


Is the root of 81 an irrational number?

No. The square root of 81 is 9, which is a rational number.


Why is square root of 9 a rational number and square root of 3 is an irrational number?

Because 9 is a perfect square - which means that its square root is an integer. 3 is not a perfect square.


Is sqare root of 9 over 16 rational or irrational?

The square root of 9/16 is 3/4 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 81 rational?

Yes. The square root of 81 is 9 - a natural number and all natural numbers are rational numbers.


Is the square root of 1 over 9 a rational number?

Yes.


Which square root number is rational?

The square root of any perfect square, or a ratio of perfect squares. eg sqrt(9/25) = 3/5, is rational.


If a square root of a number is a rational or an irrational?

It could be either. For example, √9 is a rational number, whereas √2 is not.


Is the square root of 9 rational?

Yes: the square root of 9 is 3.


Is the square root numbers rational or irrational?

It depends. If a number is a perfect square or a ratio of perfect squares then its square root is rational. If not, the square root is irrational.For example,Consider 9/4. Since 9 and 4 are both perfect squares, the square root of their ratio is rational. sqrt(9/4) = 3/2 or 1.5. But this is less obvious if the number is presented to you as sqrt(2.25)


Which of these numbers is classified as a rational number square root 17 square root 23 square root 9 square root 2?

square root of 9 = 3 but 2, 17 and 23 are irrational numbers


Is the square root of -9 a rational irrational or not a real number?

It is not a real number.


Is the square root of 22 a rational number?

No, in fact unless an integer has an integral square root, the square root is always irrational. Note that some rational fractions can have rational square roots, though. Example: sqrt(4/9) = sqrt(4)/sqrt(9) = 2/3, which is rational. Or sqrt(9/16) = 3/4