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11.4 Solving linear systems by multiplying first.ppt

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March 31, 2016
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11.4 Solving linear systems by multiplying first.ppt

11.4 Solving linear systems by multiplying first.ppt

11.4 Solving linear systems by multiplying first.ppt

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11.4 Solving linear systems by multiplying first.ppt

1. 1. Section11.4: SolvingLinearSystems byMultiplyingFirst 1
2. 2. Objective(s): By following instructions, students will be able to: 1. solve a system of linear equations by using multiplication and elimination. 2
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4. 4. explain1A Solve the system of linear equations by elimination. Check the answers by graphing the systems of equations. 4
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6. 6. explain1B Solve the system of linear equations by elimination. Check the answers by graphing the systems of equations. 6
7. 7. 7
8. 8. Your-Turn#1 Solve the system of linear equations by elimination. Check your answers by graphing the systems of equations. a) b) 8
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10. 10. explain2A 10
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12. 12. explain2B 12 The Tran family is bringing 15 packages of cheese to a group picnic. Cheese slices cost \$2.50 per package. Cheese cubes cost \$1.75 per package. The Tran family spent a total of \$30 on cheese. The system of equations ⎧ s + c = 15 ⎨ ⎩ 2.50s + 1.75c = 30 represents this situation, where s is the number of packages of cheese slices and c is the number of packages of cheese cubes. How many packages of each type of cheese did the Tran family buy?
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14. 14. 14 Your-Turn#2
15. 15. 15 Your-Turn#2
16. 16. 16 ☼ ☼ ☼
17. 17. Revisit Objective(s): Did we... 1. solve a system of linear equations by using multiplication and elimination? 17