Question

20 POINTS 20 POINTS 20 POINTS This is my second time asking this question!

Answer 1

Third and fourth.

Explanation:

The first one is not because the second number is not rational;
`√(3)` is not rational.

The second one is not either for the above reason.

The third is because
`√(4)` is 2, which is rational.

Also the fourth for the previous reason.

And not the fifth for the first reason.

Answer 2

Answer: 3. 4 2/3 ÷ √4/8 4. 4 2/3 - √4/8

Explanation:

irrational number will never be changed into rational number when they do any operation with rational numbers.

4 2/3 is a rational number, which means the second term in the expression must be rational in order to make the expression entirely rational

√3 is not rational, thus, all the expressions that contains √3 is irrational.

The remaining have √4, but √4 is rational because simplifying it will become 2, and so expressions with √4 is rational