Concept explainers
a. Try this mathematical magic trick several times.
- Write down a secret number, which can be any whole number.
- Multiply by 5
- Add 2
- Multiply by 4
- Add 2
- Multiply by 5
- Subtract 50
- Drop the two zeros at the end
Do you recognize the result?
b. Let S stand for a secret number that you begin with in part (a) write an expression in term of S that shows the result of applying the steps in part (a) . apply properties of arithmetic to this expression to explain why the end result of the steps in part (a) is what you noticed
Want to see the full answer?
Check out a sample textbook solutionChapter 9 Solutions
Mathematics for Elementary Teachers with Activities (5th Edition)
Additional Math Textbook Solutions
Differential Equations: An Introduction to Modern Methods and Applications
Finite Mathematics for Business, Economics, Life Sciences and Social Sciences Plus NEW MyLab Math with Pearson eText -- Access Card Package (13th Edition)
Basic College Mathematics (12th Edition)
Thinking Mathematically (6th Edition)
Mathematical Methods in the Physical Sciences
Excursions in Modern Mathematics (9th Edition)
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillAlgebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal LittellCollege Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning
- Holt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL