Concept explainers
(a)
To find: total time taken driving to the game and then back home
(a)
Answer to Problem 70PPS
The total time taken driving to the game and then back home is
Explanation of Solution
Given:
Distance between home and college football game = 80 miles
Average speed = 68 miles per hour.
Calculation:
Average speed to the game = x miles per hour
Average speed back from the game = (x − 3) miles per hour
Distance between home and college football game = 80 miles
Time to the game
Time back from the game
Total time is the sum of time to and back from the game.
Total time
Rewriting using LCD: x(x − 3)
Adding the numerators
Conclusion:
Therefore, the total time taken driving to the game and then back home is
(b)
To find: The total time taken driving to the game and then back home.
(b)
Answer to Problem 70PPS
Here, the total time taken driving to the game and then back home is
Explanation of Solution
Calculation:
From part (a)
Total time =
x = 68 miles per hour
Conclusion:
Therefore, the total time taken driving to the game and then back home is
Chapter 11 Solutions
Algebra 1
Additional Math Textbook Solutions
Elementary Algebra
College Algebra
Linear Algebra and Its Applications (5th Edition)
College Algebra (7th Edition)
- Algebra and Trigonometry (6th Edition)AlgebraISBN:9780134463216Author:Robert F. BlitzerPublisher:PEARSONContemporary Abstract AlgebraAlgebraISBN:9781305657960Author:Joseph GallianPublisher:Cengage LearningLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
- Algebra And Trigonometry (11th Edition)AlgebraISBN:9780135163078Author:Michael SullivanPublisher:PEARSONIntroduction to Linear Algebra, Fifth EditionAlgebraISBN:9780980232776Author:Gilbert StrangPublisher:Wellesley-Cambridge PressCollege Algebra (Collegiate Math)AlgebraISBN:9780077836344Author:Julie Miller, Donna GerkenPublisher:McGraw-Hill Education