In Exercises 5–16, use left-to-right elimination to solve the systems of equations.
13.
Want to see the full answer?
Check out a sample textbook solutionChapter 7 Solutions
MYLAB MATH COLLEGE ALGEBRA IN CONTEXT
- Expand (2x+y)5arrow_forwardIn Exercises 47–50, determine the x-intercepts of the graph of each quadratic function. Then match the function with its graph, labeled (a)-(d). Each graph is shown in a [-10, 10, 1] by [-10, 10, 1] viewing rectangle. 47. у 3D х2 -бх + 8 48. y = x? – 2r – 8 49. y = x² + 6x + 8 50. y = x² + 2x – 8 а. b. C. d.arrow_forward4 3 3 foxye*+ dydx -4e7- 10 € -10 0e6 Findarrow_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_forwardSolve the systemx′ 1 = x1+2x2, ......................(9.1.7) x′ 2 =2x1−2x2........................ (9.1.8)arrow_forward53.arrow_forward
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageCollege Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning