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Natasha2012 [34]
2 years ago
14

We have a bag that contains 100 balls, 50 of them red and 50 blue. Select 5 balls at random. What is the probability that 3 are

blue and 2 are red?
Mathematics
1 answer:
MakcuM [25]2 years ago
5 0

Answer:

Likely, I think I havent been in this for a long time so i may be a little rusty. But anyways, I hope this helped!

Step-by-step explanation:

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Find all values of x for which the series converges. (Enter your answer using interval notation.) [infinity] 9 x − 7 9 n n = 0 F
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Answer:

The series converges to   $ \frac{1}{1-9x} $     for   $ \frac{-1}{9} < x < \frac{1}{9} $                

Step-by-step explanation:

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We have to find the values of x for which the series converges.

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$ \sum_{n=0}^{\infty} ar^{n-1} $ converges to  (a) / (1-r) if r < 1

Otherwise the series will diverge.

Here, $ \sum_{n=0}^{\infty} 9^n x^n =  \sum_{n=0}^{\infty} (9x)^{n}  $ is a geometric series with |r| = | 9x |

And it converges for |9x| < 1

Hence, the given series gets converge for $ \frac{-1}{9} < x < \frac{1}{9} $

And geometric series converges to $ \frac{a}{1-r} $

Here, a = 1 and r = 9x

Therefore, $ \frac{a}{1-r} = \frac{1}{1-9x} $

Hence, the given series converges to   $ \frac{1}{1-9x} $     for   $ \frac{-1}{9} < x < \frac{1}{9} $

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\bold{ANSWER:}
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Oh yikes this is a hard one!
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Answer:

A.

Step-by-step explanation:

\frac{1}{3} ÷ 5 = \frac{1}{3}*\frac{1}{5}  =\frac{1}{15}

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