1. You Try
Armoni recently finished building a rectangular soccer field at the new REC center. The side lengths are meters and −1 meters. What is the area and perimeter of this soccer field?

2. Reminders Switching classes/difficulty of this class
Brief EOC discussion

3. Classifying Rational and Irrational Numbers

4. Examples 87
.43
3 12
.817…
8 −
Repeating decimal

5. You Try Is the sum of 12 and 1 3 rational or irrational? Explain why.
Is 9× rational or irrational? Justify your answer.
Is 14∙ rational or irrational? Why?

6. Quiz Review Practice
Determine if the following radical expressions are rational or irrational.
3 9

7. Proof that the sum or product of two rational numbers is rational
numbers/sums-and-products-of-rational-and-irrational-numbers/v/sum-and- product-of-rational-numbers

8. Proof of the sum of a rational number and irrational number is irrational
numbers/sums-and-products-of-rational-and-irrational-numbers/v/proof-that- sum-of-rational-and-irrational-is-irrational

9. Proof of the product of a nonzero rational number and irrational number is irrational
numbers/sums-and-products-of-rational-and-irrational-numbers/v/proof-that- rational-times-irrational-is-irrational

10. Quiz Review Example
Justify your response to the given statement. Include example(s) in your justification.
The product of two radical expressions is always an irrational number.