Question

Which of the following is a rational number? (4 points)

square root 97square root 98, square root 99, square root 100

Answer 1

The square root of 100 is a rational number.

Explanation:

The square root of 100 is 10. A rational number is a number that can be made by dividing two integers (whole numbers). 10 ÷ 1 = 10. None of the other options are integers, so they are out.

Answer 2

Square root 100

Explanation:

A rational number is a number that can be completely expressed by a fraction. In this case, 100 is the only square number so only the square root of 100 will result in a rational number (10) or (10/1). The others are not square numbers so square rooting them will result in a long line of decimal points which cannot be expressed by a fraction.

Hope this helped!