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Q: Is the square root of 19 a rational number?

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The square roots are -19 and +19.

The square root of 361 is 19.

Yes, they are.

19, -19

-- Any number that you can completely write down using digits, and a decimal point or fraction bar if needed, is rational. -- A rational number is defined as one that can be written as a fraction using whole numbers. -19 can be written as the fraction -19/1 .

Related questions

The square root of the prime number 19 is an irrational number

No. √19 is an irrational number.

No

No

The square root of 19 is approximately 4.36

A square root is considered a rational number if the number inside the square root sign is a perfect square. In other words, if the square root of a number results in a whole number, then it is a rational number. For example, the square root of 9 is 3, which is a whole number, making it a rational number. However, if the square root results in a non-terminating, non-repeating decimal, then it is considered an irrational number.

19 squared is 361 but the square root of 19 is an irrational number and it is about 4.359 rounded to 3 decimal places

No negative number can have a real square root.In math and engineering, the symbol ' i ' is used to representthe square root of -1 .Then the square root of -19 can be written as 4.3589 i (rounded).

No.

Yes

Square root of 19 is 4.36

No because 19 is a whole number which means that it is a rational number