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IrinaVladis [17]
2 years ago
13

A shipment contains 9 igneous, 7 sedimentary, and 7 metamorphic rocks. If 7 rocks are selected at random, find the probability t

hat exactly 5 are sedimentary.
Mathematics
1 answer:
yKpoI14uk [10]2 years ago
7 0

Answer:

75 percent

Step-by-step explanation:

see the thing is

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maksim [4K]
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5 + x can also be written as 5 + 7

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In the figure we have three parallel lines cut by two transversals

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