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zalisa [80]
2 years ago
12

After a 60% reduction, you purchase a new sofa drink machine on sale for $312.

Mathematics
1 answer:
Varvara68 [4.7K]2 years ago
4 0
Search up 0.60 x 312= 187.2, 187.2 + 312 = 499.2
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Answer:

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Events AB, ABc, AcB and AcBc are jointly exhaustive and disjoint, hence P(AB) + P(ABc) + P(AcB) +P(AcBc) =1.

Events A and B independent, hence Ac and Bc independent too and probability P(AcBc) = P(Ac)*P(Bc) = (1 - P(A))(1-P(B)) = 0.6*0.4 = 0.24.

Required probability P(AB + ABc + AcB ) = P(AB) + P(ABc) + P(AcB) = 1- P(AcBc) = 1 - 0.24 = 0.76.

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2 years ago
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