4 years ago

P(B)=0.45 P(A or B)=0.72 P(B/A)=0.4 P(A) = ?

Mathematics

1 answer:

den301095 [7]4 years ago

4 0

P(A or B) = P(A) + P(B) - P(A) * P(B | A)

0.72 = P(A) + 0.45 - P(A) * 0.4

0.72 - 0.45 = P(A) - P(A) * 0.4

0.27 = P(A) * (1 - 0.4)

0.27 = P(A) * 0.6

P(A) = 0.27 / 0.6 = 0.45

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Answer:

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4 years ago

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4 years ago

!!!!!!PLEASE HELP!!!!!<br><br> 28 kg of bananas cost $56. How much<br> would 36 kg cost?

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Answer:

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Step-by-step explanation:

We can write this as a ratio

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------------ = ---------------

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Using cross products

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