Using Cramer’s Rule In Exercises
Want to see the full answer?
Check out a sample textbook solutionChapter 3 Solutions
Elementary Linear Algebra (MindTap Course List)
- Software Publishing The table shows the estimate revenues in billions of dollars of software publishers in the United States from 2011 through 2013.Source: U.S. Census Bureau Year Revenues, y 2011 156.8 2012 161.7 2013 177.2 a Create a system of linear equations for the data to fit the curve y=at2+bt+c Where t = 1 corresponds to 2011, and y is the revenue. b Use Cramers Rule to solve the system. c Use a graphing utility to plot the data and graph the polynomial function in the same viewing window. d Briefly describe how well the polynomial function fits the data.arrow_forwardHealth Care Expenditures The table shows annual personal health care expenditure in billions of dollars in the united states from 2011 through 2013 Source Bureau of Economic Analysis. Year 2011 2012 2013 Amount y 1765 1855 1920 (a) Create a system of linear equations for the data to fit the curve y=at2+bt+c where t=1 corresponds to 2011, and y is the amount of the expenditure. (b) Use the Cramers Rule to solve the system. (c) Use a graphing utility to plot the data and graph the polynomial function in the same viewing window. (d) Briefly describe how well the polynomial function fits the data.arrow_forwardUse Cramer's Rule to determine the solution to the system of equations. 5х, + 3x, 3D 15 12х, — 6х, 3D 7arrow_forward
- The table shows the numbers of visitors y (in thousands) to one country from another country from 2012 through 2014. Visitors, y (in thousands) Year 2012 1476 2013 2014 1805 2186 (a) The data can be modeled by the quadratic function y = at? + bt + c. Write a system of linear equations for the data. Let t represent the year, with t= 12 corresponding to 2012. = 1476 = 1805 = 2186 (b) Use the matrix capabilities of a graphing utility to find the inverse of the coefficient matrix of the system from part (a). (c) Use the result of part (b) to solve the system and write the model y = at2 + bt = c. (d) Use the graphing utility to graph the model with the data.arrow_forwardLinear algebra : please justify your answer by showing all stepsarrow_forwardLinear algebra: please correctly and handwrittenarrow_forward
- Use Cramer’s Rule to solve (if possible) the system of linear equations.arrow_forwardODashboard X "EN20 IN-Algebra l-1 (EN O x + a https://r04.core.lean.edgenuity.com/Player/ "EN20 IN-Algebra l-1 (EN ONLINE) English Solving a System of Linear Equations Using the Linear Combination Method Elliot added the two equations and the result was Elliot has a total of 26 books. He has 12 more fiction books than nonfiction books. Let x represent the number 2x = 38. of fiction books and y represent the number of nonfiction solve the equation. How many of each type of book books. does Elliot have? The system of equations models the total costs for each 124 fiction books x+y = 26 X-y = 12 nonfiction books ) Intro V Done Previous Adivity Lenovo 4- *- F11 Esc FnLock F7 FB F9 F10 F1 F2 F3 & @ 23 1 4 17 Q W R Y A S J K C M Alt エ Barrow_forward
- Elementary Linear Algebra (MindTap Course List)AlgebraISBN:9781305658004Author:Ron LarsonPublisher:Cengage LearningAlgebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal Littell
- Linear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage LearningAlgebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageCollege Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning