https://file.aiquickdraw.com/mathbot/file/1725889304629jn1qhsnm.jpg

Let's classify the numbers from the table as either rational or irrational:

1. **−18π**: 
   - **π** (pi) is an irrational number because it cannot be expressed as a fraction of two integers.
   - **−18π** is the product of an irrational number (π) and a rational number (−18), which results in an **irrational number**.
   
2. **−2√3**:
   - **√3** (square root of 3) is irrational because it is not a perfect square and cannot be expressed as a fraction.
   - **−2√3** is the product of a rational number (−2) and an irrational number (√3), which results in an **irrational number**.

3. **−92.45**:
   - This is a terminating decimal, which can be expressed as a fraction (−9245/100), meaning it is a **rational number**.

4. **√49**:
   - **√49** (square root of 49) is a perfect square, equal to 7, which is a rational number.
   - So, **√49** is a **rational number**.

5. **−70.49**:
   - This is a terminating decimal, which can be expressed as a fraction (−7049/100), meaning it is a **rational number**.

### Final classification:

- **−18π** → irrational
- **−2√3** → irrational
- **−92.45** → rational
- **√49** → rational
- **−70.49** → rational

Would you like any further details or explanations? 

Here are 5 related questions you might want to consider:
1. What is the difference between rational and irrational numbers?
2. How do you prove that a number like π is irrational?
3. Are all square roots irrational?
4. How can you express a terminating decimal as a fraction?
5. What happens when you multiply a rational number by an irrational number?

**Tip:** Remember, any terminating or repeating decimal is always rational because it can be expressed as a fraction!

Classify each number below as a rational number or an irrational number.

Learn how to classify numbers as rational or irrational with examples such as -18π, -2√3, and √49. This problem covers key concepts of rational and irrational numbers, suitable for students in Grades 7-9.

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