In Exercises 33-41. use the four-step strategy to solve each problem. Use x, y. and z to represent unknown quantities Then translate from the verbal conditions of the problem to a system of three equations in three variables
The bar graph shows the average number of hours U.S. college students study per week for seven selected majors. Study limes are rounded to the nearest hour.
Soureet statista.com
The combined weekly study time (or students majoring in physics. English, and sociology is 50 hours. The difference between weekly study lime for physics majors and English majors is 4 hours The difference between weekly study lime for physics majors and sociology majors is 6 hours. Find the average number of hours per week that physics majors, English majors, and sociology majors spend studying.
Want to see the full answer?
Check out a sample textbook solutionChapter 7 Solutions
Precalculus (6th Edition)
Additional Math Textbook Solutions
Calculus: Single And Multivariable
Precalculus: Mathematics for Calculus (Standalone Book)
University Calculus: Early Transcendentals (3rd Edition)
Calculus & Its Applications (14th Edition)
University Calculus: Early Transcendentals (4th Edition)
Calculus For The Life Sciences
- Write a system of three equations in three variables with an infinite number of solutions.arrow_forwardTake a handful of two types of coins, and write a problem similar to Example 5.46 relating the total number of coins and their total value. Set up a system of equations to describe your situation and then solve it.arrow_forwardUse the system of three equations in three variables to solve each problem. Work schedules A college student earns 198.50 per week working three part-time jobs. Half of his 30-hour work week is spent cooking hamburgers at a fast-food chain, earning 5.70 per hour. In addition, the student earns 6.30 per hour doing janitorial work. How many hours per week does the student work at each jobarrow_forward
- College Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage LearningAlgebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal LittellGlencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill
- Big Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin HarcourtElementary AlgebraAlgebraISBN:9780998625713Author:Lynn Marecek, MaryAnne Anthony-SmithPublisher:OpenStax - Rice University