Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 5 - Section 5.2 - Negative Exponents and Scientific Notation - Exercise Set - Page 356: 119

Answer

No, the percentages do not have a sum of 100%.

Work Step by Step

Let us round each of the percentages down--to the closest 10%. Google: 40% Facebook: 20% Yahoo!: 20% YouTube: 20% Windows Live: 10% Wikipedia: 10% $40+20+20+20+10+10=120$ People are not limited to one website per day--they can visit as many websites as they wish. People marked (on the survey) that they visited multiple websites on a day.
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