systems Practice

# systems Practice - test The third model requires 11 hours...

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Practice 1. Solve each of the following systems. 0 2 5 2 = + - = + y x y x 3 5 . 2 5 5 2 = - - = + y x y x 1 3 6 2 = + - = + y x y x 5 . 2 2 5 4 2 = - - = + y x y x 4 5 2 5 2 = - - - = - + - = + + z y x z y x z y x 4 2 2 3 2 3 6 2 = - - - = - + - = + + z y x z y x z y x 4 3 2 2 3 2 2 4 3 5 2 2 5 2 2 = - - + + = - + - + - = - - + + - = - + - - = + + - + z y x w v z y x w v z y x w v z y x w v z y x w v 2. For each of the following, set up a system of equations and then solve it. a. A company sells two products: an electronic stapler and an electronic copier. The stapler sells for AED 57 and the copier for AED 134. Last week they sold a total of 112 products for a total of AED 9618. Determine how many of each they sold. b. A car maker has three models of a particular car. The first model requires 9 hours to assemble, 3 hours to paint, and 2 hours to test. The second model requires 7.5 hours to assemble, 2.4 hours to paint, and 2 hours to
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Unformatted text preview: test. The third model requires 11 hours to assemble, 4 hours to paint, and 2.5 hours to test. Last week the plant used a total of 1220.5 hours for assembly, 412.4 hours for painting, and 293.5 hours for testing. Determine the number of each model of car made in the plant last week. 3. Given an original example of a system of linear equations that has no solution. 4. Given an original example of a system of linear equations that has an infinite number of solutions....
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