Answer
.375
Work Step by Step
In the bag of 40 marbles, there are 8 black and 7 white marbles. Thus, the probability is:
$$=\frac{8+7}{40}=.375$$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 10 Counting Methods and Probability - 10.4 Find Probabilities of Disjoint and Overlapping Events - 10.4 Exercises - Quiz for Lessons 10.3-10.4 - Page 713: 8
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