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Q: Is the square root of 9 a whole number?

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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

Yes. The square of a whole number is always a whole number. For example, 3 squared is 9, so the square root of 9 is 3. What you never have, is the square root of a whole number being a fraction that is not a whole number. The square root of a whole number is either a whole number or an irrational number. For example, the square root of 2 is irrational, because there are no 2 whole numbers a and b such that a/b squared is 2. This is not terribly difficult to prove, but I have already said too much; I have answered your question.

For a number to be a perfect square, the number's square root has to be a whole number. 9 is a perfect square because its square root is a whole number, 3. If the square root of the number is a decimal, then it is not a perfect square. For example, 13 does not divide evenly so it not a perfect square.

Yes. For example, the square root of 1/9.

9

Square root of 75 is about 8.660254038 so it is 9

If the square root is a whole number, then the square of the square root, the original number, is also a whole number; all whole numbers can be expressed as themselves over 1, and so are rational numbers. The answer is thus any square number, ie the square of the natural numbers: 1 (1²), 4 (2²), 9 (3²), 16 (4²), etc.

Yes, it is +3 or -3

9

Rounded to two decimal places, the square root of 85 is 9.22. Rounded down to the nearest whole number, this is 9.If you square 9, you get 9 x 9 = 81.

No. A square number is one that has an integral as its square root. For example, 9 is a square number because 3 x 3 = 9. There is no whole number that gives you 11 when multiplied by itself.

No, a square root doesn't have to be a whole number. The square root of 2.25 is 1.5. It could be said that most square roots are not whole numbers. Take just the first few integers (counting numbers). Find the square roots of the numbers 1 through 10 and you'll find three of the numbers have whole number square roots (1, 4 and 9). The other seven don't. For the numbers 11 through 20, there is only 1 number with a whole number square root (16).

3 is the square root of 9. 9 is a square number. 9 is the square root of 81. 81 is a square number.

9 (92 = 81)

It is about 9

92 = 81 and 102 = 100 so the square root of any number between 81 and 100 would lie between 9 and 10.

The number 3 is the square root of the number 9 !

You are asking for the square root. The square root of a number is a number multiplied by itself to get that number. For example, the square root of 81 is 9, because 9 X 9= 81. The square root of 1000 is not a whole number, it is 31.62 (rounded) because 31.62 x 31.62 = 1000.(31.62 is approximate. The actual number is 31.6227766)

A perfect square is a number whose square root is a whole number, such as 1, 4, 9, 16, 25, etc.

9 x 9 = 81 and 10 x 10 = 100. So any number 82-99 would have a square root between 9 and 10.

The square root of 99 falls between the whole numbers 9 and 10.Because 102 = 100and 92 = 8199 is between 81 and 100, so when you square root it, it falls between 9 and 10.

9 is the best estimate whole number

9 and 10

The square root of 9 is rational.

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