Question

Which expression represents rational numbers? Select all that apply

Answer 1

1.
`√(100) √(100)`

2. 13.5 +
`√(81)`

3.
`√(9) + √(729)`

6.
`(3)/(5) + 2.5\\(3+12.5)/(5)\\(15.5)/(5)\\= 3.1`

These four options are rational;

Explanation:

1.
`√(100) √(100)` equals to 10 * 10 = 100 which is rational

2. 13.5 +
`√(81)` equals 13.5 + 9 = 22.5

3.
`√(9) + √(729)` -- 3+27 = 30

6.
`(3)/(5) + 2.5\\(3+12.5)/(5)\\(15.5)/(5)\\= 3.1`

Option 4 and 5 are irrational because they include
`√(353)` and
`√(216)` which are not a perfect square and their answers will be non recurring and non terminating decimal fraction.