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Black_prince [1.1K]
3 years ago
7

Please help me on this one

Mathematics
1 answer:
devlian [24]3 years ago
4 0

Answer:

option a

step-by-step explanation:

To rationalize the expresion we need to multiply and divide the expression by the conjugate of the denominator as follows

sqrt(9) / (sqrt(3) + sqrt(x)) = sqrt(9) ((sqrt(3) - sqrt(x)) / ((sqrt(3) + sqrt(x))(sqrt(3) - sqrt(x)))

3((sqrt(3) - sqrt(x)) / (3 - x)

So the result es option a:

(3sqrt(3) - 3sqrt(x)) / (3 - x)

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Probability that one type of candy will be chosen more than once in 10 trials = 0.2639

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- A binomial experiment is one in which the probability of success doesn't change with every run or number of trials.

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Binomial distribution function is represented by

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q = probability of failure = Probability of not picking our wanted candy = 1 - p = 1 - 0.1 = 0.90

P(X > 1) = 1 - P(X ≤ 1)

P(X ≤ 1) = P(X = 0) + P(X = 1)

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P(X = 1) = ¹⁰C₁ (0.10)¹ (0.90)¹⁰⁻¹ = 0.387420489

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P(X > 1) = 1 - 0.7360989291 = 0.2639010709 = 0.2639

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