3 years ago

Simplifying exponential expressions. a^5 b^5 c^5

1 answer:

6 0

$\frac{a^{5}b^{5}c^{5}}{-a^{2}b^{3}c^{4}} = -a^{3}b^{2}c$

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Nitella [24]

Answer: 0.9730

Step-by-step explanation:

Let A be the event of the answer being correct and B be the event of the knew the answer.

Given: $P(A)=0.9$

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$P(B|A^{C})=0.25$

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Hence, the student correctly answers a question, the probability that the student really knew the correct answer is 0.9730.

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3 years ago