Question

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