3 years ago

Solve.

1 answer:

3 0

B

3y>-6-15
3y>-21
y>-21/3
y>-7

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Andre45 [30]

Answer:

the thing is, you wrote drama club and then speech club. is this a trick question ?

Step-by-step explanation:

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lubasha [3.4K]

Answer:

0.0256

Step-by-step explanation:

Assuming a binomial model, with probability of success (getting a red marble) p = 0.20. The probability of obtaining 'k' successes in 'n' trials is:

$P(x=k)=\frac{n!}{(n-k)!k!}*p^k*(1-p)^{n-k}$

For k = 3 red marbles in n = 4 trials:

$P(x=3)=\frac{4!}{(4-3)!3!}*0.20^3*(1-p)^{4-3}\\P(x=3)=4*0.20^3*0.8\\P(x=3) = 0.0256$

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natulia [17]

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SVEN [57.7K]

The second one is correct

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