Lesson Quiz Lesson 8-6

Lesson Quiz

Use the diagram for Exercises 1 and 2.

y

50 N

22?

O

x

Lesson 8-6

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1. Describe the vector as an ordered pair. Round coordinates

W to the nearest tenth.

2. Use compass directions to describe the direction of ON .

3. Iris rode her bike 30 mi south and 16 mi west of her home. Her trip can be described by the vector ?16, ?30. Use distance

W W W and direction to describe the vector a second way.

4. Write the vector v a ? b as an ordered pair.

y

5 4 3 2 1

2 11 2 3

a

1 2 3 4 5 6x b

5. An airplane has a speed of 240 mi/h in still air. The plane heads due north and encounters a 30-mi/h wind blowing due east. Find the resultant speed and direction. Round to the nearest unit.

Answers 1. 46.4, 18.7 2. 22? north of east 3. 34 mi at about 28? west of south.

Geometry Chapter 8

4. 5, 2 5. 242 mi/h at 7? east of north

Lesson Quiz 130

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