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In Problems 5-8, find the pivot element, identify the entering and exiting variables, and perform one pivot operation.
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Chapter 6 Solutions
Finite Mathematics for Business, Economics, Life Sciences, and Social Sciences (13th Edition)
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- Solve for X in the Equation, given A=-401-532 and B=12-2144 a 3X+2A=B b 2A5B=3X c X-3A+2B=0 d 6X4A-3B=0arrow_forwardA man has $420,000 invested in three rental properties. One property earns 7.5% per year on the investment, the second earns 7%, and the third earns 9%. The total annual earnings from the three properties is $33,900, and the amount invested at 9% equals the sum of the first two investments. Let x equal the investment at 7.5%, y equal the investment at 7%, and z represent the investment at 9%. Complete parts (a) through (d) below. a. Write an equation that represents the sum of the three investments. (Type an equation. Do not include the $ symbol in your answer.) b. Write an equation that states that the sum of the returns from all three investments is $33,900. (Type an equation. Do not include the $ symbol in your answer.) c. Write an equation that states that the amount invested at 9% equals the sum of the other two investments. (Type an equation. Do not include the $ symbol in your answer) d. Solve the system of equations to find how much is invested in each property,arrow_forwardA man has $420,000 invested in three rental properties. One property earns 6.5% per year on the investment, the second earns 9%, and the third earns 8%. The total annual earnings from the three properties is $34,450, and the amount invested at 8% equals the sum of the first two investments. Let x equal the investment at 6.5%, y equal the investment at 9%, and z represent the investment at 8%. Complete parts (a) through (d) below. a. Write an equation that represents the sum of the three investments. nothing (Type an equation. Do not include the $ symbol in your answer.) b. Write an equation that states that the sum of the returns from all three investments is $34,450. nothing (Type an equation. Do not include the $ symbol in your answer.) c. Write an equation that states that the amount invested at 8% equals the sum of the other two investments. nothing (Type an equation. Do not include the $ symbol in your answer.) d. Solve the system of equations…arrow_forward
- Elementary Linear Algebra (MindTap Course List)AlgebraISBN:9781305658004Author:Ron LarsonPublisher:Cengage LearningAlgebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageCollege Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning
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