1. Review: 9.4c Mini-Quiz Find the distance between (1, 2) and (-3, 0).
1. Solve for a.
Find the distance between
(1, 2) and (-3, 0).

2. Class Greeting

3. Chapter 9 Radical Expressions and Equations
Lesson 9-4b
Radical Equations and Applications

4. Objective: The students will solve word problems involving radical equations.

5. Applications of Radicals

6. The time t for a pendulum of length L to go through one cycle is given by the formula:
How long is the pendulum of a mantel clock with a period of 0.8 seconds?
Answer:
The pendulum is feet.

7. Example 2 – Dimensions of a Softball Diamond
A softball diamond has 60-foot sides, as shown below. The catcher is 4 feet behind home plate. Estimate how far does the catcher has to throw to reach second base. 85
* Remember that the catcher has to throw from 4 feet more than x.
The catcher has to throw
about 89 feet.
Answer:
x2 =

8. Lesson Summary: Objective: The students will solve word problems involving radical equations.

9. Preview of the next Lesson: Objective: The students will solve word problems involving radical equations. (continued)

10. Homework
538/79-85 odd

11. Stand Up Please