Chapter 9 - XYZ Custom Plus

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562 <strong>Chapter</strong> 9 Solving Equations and Inequalities 6. Find the complement and the supplement of 35°. Example 6 Find the complement and the supplement of 25°. Solution We can use the formulas above with x 5 25°. The complement of 25° is 90° 2 25° 5 65°. The supplement of 25° is 180° 2 25° 5 155°. Getting Ready for Class After reading through the preceding section, respond in your own words and in complete sentences. 1. What is a formula? 2. How do you solve a formula for one of its variables? 3. What are complementary angles? 4. What is the formula that converts temperature on the Celsius scale to temperature on the Fahrenheit scale? Answer 6. Complement 5 55°; Supplement 5 145°
9.6 Problem Set 563 Problem Set 9.6 A The formula for the area A of a rectangle with length l and width w is A 5 l ? w. Find A if: [Examples 1–4] 1. l 5 32 feet and w 5 22 feet 2. l 5 22 feet and w 5 12 feet 3. l 5 3 } 2 inch and w 5 3 } 4 inch 4. l 5 3 } 5 inch and w 5 3 } 10 inch The formula G 5 H ? R tells us how much gross pay G a person receives for working H hours at an hourly rate of pay R. In Problems 5-8, find G. 5. H 5 40 hours and R 5 $6 6. H 5 36 hours and R 5 $8 7. H 5 30 hours and R 5 $9} 1 8. H 5 20 hours and R 5 $6} 3 2 4 Because there are 3 feet in every yard, the formula F 5 3 ? Y will convert Y yards into F feet. In Problems 9-12, find F. 9. Y 5 4 yards 10. Y 5 8 yards 11. Y 5 2 2 } 3 yards 12. Y 5 6 1 } 3 yards If you invest P dollars (P is for principal ) at simple interest rate R for T years, the amount of interest you will earn is given by the formula I 5 P ? R ? T. In Problems 13 and 14, find I. 13. P 5 $1,000, R 5 7 6 }, and T 5 2 years 14. P 5 $2,000, R 5 }, and T 5 2 } 1 years 100 100 2 In Problems 15-18, use the formula P 5 2w 1 2l to find P. 15. w 5 10 inches and l 5 19 inches 16. w 5 12 inches and l 5 22 inches 17. w 5 3 } 4 foot and l 5 7 } 8 foot 18. w 5 1 } 2 foot and l 5 3 } 2 feet
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Solving Equations and Inequalities
Page 3 and 4: The Distributive Property and Algeb
Page 5 and 6: 9.1 The Distributive Property and A
Page 7 and 8: 9.1 The Distributive Property and A
Page 9 and 10: 9.1 Problem Set 517 Problem Set 9.1
Page 11 and 12: 9.1 Problem Set 519 Find the value
Page 13 and 14: 9.1 Problem Set 521 91. Temperature
Page 15 and 16: Introduction . . . The Addition Pro
Page 17 and 18: 9.2 The Addition Property of Equali
Page 21 and 22: 9.2 Problem Set 529 Applying the Co
Page 23 and 24: The Multiplication Property of Equa
Page 25 and 26: 9.3 The Multiplication Property of
Page 29 and 30: 9.3 Problem Set 537 Find the value
Page 31 and 32: Introduction . . . Linear Equations
Page 33 and 34: 9.4 Linear Equations in One Variabl
Page 37 and 38: 9.4 Problem Set 545 C Applying the
Page 39 and 40: Introduction . . . Applications As
Page 41 and 42: 9.5 Applications 549 Step 2 Assign
Page 43 and 44: 9.5 Applications 551 Example 4 The
Page 45 and 46: 9.5 Applications 553 Step 2 Assign
Page 49 and 50: 9.5 Problem Set 557 Coin Problems 3
Page 51 and 52: Introduction . . . Evaluating Formu
Page 53: 9.6 Evaluating Formulas 561 The rat
Page 57 and 58: 9.6 Problem Set 565 B Maximum Heart
Page 59 and 60: 9.6 Problem Set 567 Applying the Co
Page 61 and 62: Chapter 9 Summary Combining Similar
Page 63 and 64: Chapter 9 Review Simplify the expre
Page 65 and 66: Chapter 9 Cumulative Review 573 28.
Page 67 and 68: Chapter 9 Projects Solving Equation
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Chapter 9 - XYZ Custom Plus

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