Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 12 - Data Analysis and Probability - 12-8 Probability of Compound Events - Practice and Problem-Solving Exercises - Page 781: 31



Work Step by Step

You do not replace the coins, so the events are dependent. 3 of the 9 coins are dimes: P(dime)=$\frac{3}{9}$=$\frac{1}{3}$ 2 of the 8 remaining coins are a penny: P(penny after dime)=$\frac{2}{8}$=$\frac{1}{4}$ P(dime then penny)=P(dime) $\times$ P(penny after dime) P(dime then penny)=$\frac{1}{3}$ $\times$ $\frac{1}{4}$ P(dime then penny)=$\frac{1}{12}$
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