Beginning Algebra, 11th Edition

SECTION 4.3 Solving Systems of Linear Equations by Elimination^267 NOTE In Example 3,we eliminated the variable x. Alternatively ...

Solve each system by the elimination method. (Hint: In Exercises 29–34, first clear all frac- tions or decimals.) Check each sol ...

SECTION 4.3 Solving Systems of Linear Equations by Elimination^269 41. 42. 6 x+ 6 y=- 7 9 x+ 4 y=- 3 16 x- 18 y= 17 24 x+ 12 y=- ...

Solve each applied problem. See Sections 2.4 – 2.7. 47.As of 2009, the all-time top scorer in the National Hockey League was Way ...

Summary Exercises on Solving Systems of Linear Equations^271 Concept Check Use the preceding guidelines to solve each problem. 1 ...

272 CHAPTER 4 Systems of Linear Equations and Inequalities OBJECTIVE 1 Solve problems about unknown numbers. Solving a Problem a ...

SECTION 4.4 Applications of Linear Systems^273 Step 5 State the answer.Footwear sales were $17,190 million and clothing sales we ...

274 CHAPTER 4 Systems of Linear Equations and Inequalities Step 5 State the answer.The club members bought 8 main floor tickets ...

SECTION 4.4 Applications of Linear Systems^275 Be sure to write twoequations. These two equations form this system. (1) (2) Step ...

Step 3 Write two equations.The total distance traveled by both cars is 400 mi, which gives the first equation. The faster car go ...

SECTION 4.4 Applications of Linear Systems^277 5.According to Natural Historymagazine, the speed of a cheetah is 70 mph. If a ch ...

13.The two domestic top-grossing movies of 2009 were Avatarand Transformers 2: Revenge of the Fallen.The movie Trans- formers 2g ...

SECTION 4.4 Applications of Linear Systems^279 23.Two of the top-grossing North American concert tours in 2008 were The Police a ...

Write a system of equations for each problem, and then solve the system. See Example 4. 31.Two trains start from towns 495 mi ap ...

SECTION 4.5 Solving Systems of Linear Inequalities^281 39.If a plane can travel 440 mph into the wind and 500 mph with the wind, ...

Solving a System of Linear Inequalities Graph the solution set of the system. Step 1 To graph graph the solid boundary line and ...

SECTION 4.5 Solving Systems of Linear Inequalities^283 Solving a System of Linear Inequalities Graph the solution set of the sys ...

284 CHAPTER 4 Systems of Linear Equations and Inequalities If the inequalities of a system are not solved for yas in this exampl ...

SECTION 4.5 Solving Systems of Linear Inequalities^285 EXERCISES 25 – 28 Match each system of inequalities with its solution set ...

4.1 system of linear equations (linear system) solution of a system solution set of a system set-builder notation consistent sys ...