When proving that the sum of two rational numbers is rational in the expression a+cbd

Question

, which value could be used for a in order to apply the proof?(1 point)
Responses

3
3
π

pi
30
Start Fraction 3 over 0 End Fraction
3–√

Answer 1

To prove that the sum of two rational numbers is rational, it’s important to select a rational number for the variable \( a \).

Among the options provided:

1. 3 (this is a rational number)
2. π (this is an irrational number)
3. 30 (this is a rational number)
4. Start Fraction 3 over 0 End Fraction (this is undefined)
5. 3–√ (this is an irrational number)

The valid options are 3 and 30, both of which are rational numbers.

So, either 3 or 30 could be used for \( a \) in order to apply the proof.

If only one response can be selected, choose 3 as a valid rational number.