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2) A boy who is 5.5 feet tall casts a shadow that is 8.25 feet long. The tree next to him casts a shadow that is 18 feet long. How tall is the tree? 3)

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Presentation on theme: "2) A boy who is 5.5 feet tall casts a shadow that is 8.25 feet long. The tree next to him casts a shadow that is 18 feet long. How tall is the tree? 3)"— Presentation transcript:

1 2) A boy who is 5.5 feet tall casts a shadow that is 8.25 feet long. The tree next to him casts a shadow that is 18 feet long. How tall is the tree? 3) The scale on a map is 1 in. : 20 mi. What is the actual distance between two towns that are 3.5 inches apart on the map?

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3  To define a variable in terms of another variable  To model distance-rate- time problems

4 To solve real-world problems involving distance, rate, and time, as in examples 3-5

5 consecutive integers: Numbers that differ by 1. Example: uniform motion: An object that moves at a constant rate.

6 The width of a rectangle is 3 in. less than its length. The perimeter of the rectangle is 26 in. What is the width of the rectangle? The width of the rectangle is 5

7 The sum of three consecutive integers is 72. Find the integers. 1 st Integer: 2 nd Integer: 3 rd Integer:

8 An airplane left an airport flying at 180 mi/h. A jet that flies at 330 mi/h left 1 hour later. The jet follows the same route as the airplane at a different altitude. How many hours will it take the jet to catch up with the airplane? 1 st plane: 2 nd plane: Therefore it will take the jet 1  hours to catch up to the 1 st plane.

9 Suppose you hike up a hill at 4 km/h. You hike back down at 6 km/h. Your hiking trip took 3 hours. How much time did it take you to hike up the hill? up hill: down hill: It took 1.8 hours to hike up the hill.

10 Two jets leave Dallas at the same time and fly in opposite directions. One is flying west 50 mi/h faster that the other. After two hours, the jets are 2500 miles apart. Find the speed of each jet. 1 st jet: 2 nd jet: The first jet was traveling at 600 mi/h and the second jet was traveling at 650 mi/h.

11 Web Site: PHSchool.com Tutor Web code: ate-0306 Lesson Web Code: ata-0306

12  Write today’s goal.  Write today’s assignment.

13  Pg 162 2 – 18 e, 28, 36 – 42 e  Reflective Journal


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