In Exercises 47–52, solve each system by the method of your choice.
49.
Want to see the full answer?
Check out a sample textbook solutionChapter 5 Solutions
College Algebra Essentials (5th Edition)
- In Exercises 7-18, solve the given system of linear equations. 13. x + 2y = -3 x z=0 x + 3y2z = -2arrow_forwardExercises 68-70 will help you prepare for the material covered in the next section. 68. Solve the system: Sx + 2y = -1 y = 1. What makes it fairly easy to find the solution? 69. Solve the system: x + y + 2z = 19 y + 2z = 13 = 5. z = What makes it fairly easy to find the solution? 70. Consider the following array of numbers: [1 2 -1 4 -3 -15]arrow_forwardDetermine if the systems in Exercises 19 are consistent. Do not completely solve the systems.arrow_forward
- Exercises 67-74: Solve the linear equation with the x-intercept method. Check your answer. Approximate the solution to the nearest thousandth whenever appropriate. 67. 2x – 4 = 0 68. -1 – 69. 2x = -(3 – x) 70. 3x = -(x – 4) 71. –2(3 – 2x) = 4x – (1 – x) 72. x - 3(x – 4) =-(-3 – x) 73. 3 74. (x – V2) = 1.07.x – 6arrow_forward3.) What is the solution to the system of equations below? * 4 -3 -2 -1 2 34 Your answerarrow_forward24. Solve the system of equations.* y=-2x² 3x2 +y = 52 *More than one answer may be correct; check all that apply. O (4, – 8) 13 (2i, - 8) 13 ン V13 2. 13) O -21, 4) O (-2i, - 8) (-V13, – 8) □ (學,-号 ) V13 (2i, )arrow_forward
- An important application of systems of equations arises in connection with supply and demand. As the price of a product increases, the demand for that product decreases. However, at higher prices, suppliers are willing to produce greater quantities of the product. Exercises 97–98 involve supply and demand. 97. A chain of electronics stores sells hand-held color televisions. The weekly demand and supply models are given as follows: Number sold Demand model per week N = -5p + 750 Price of television Number supplied to the chain per week N = 2.5p. 1apow hjddns a. How many hand-held color televisions can be sold and supplied at $120 per television? b. Find the price at which supply and demand are equal. At this price, how many televisions can be supplied and sold each week?arrow_forwardCorrect and detailed answer will be Upvoted else downvoted. Thank you!arrow_forwardO (2, 4) O (3,-1) O (0. -4) O There is no solution to this system.arrow_forward
- How many solutions does the graphed system below have? * (A) O O (B) 1 O (C) 2 O (D) Infinitearrow_forwardLI Solve a system of eguation X id.com/math/grade 8/solve-a-system-of-equations-by graphing 4 10 2 4 10 -4 to 10 y -x+ 3 The solution is VO 12:24 OAOLarrow_forward8. Identify the number of solutions from the description of the equations. Two equations are the same on one side but different on the other. • One of the equations in the system can be rewritten so it is identical to the other equation.arrow_forward
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageAlgebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal Littell