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KATRIN_1 [288]
3 years ago
7

Simplify. 863x14y9−−−−−−√

Mathematics
2 answers:
Mariana [72]3 years ago
5 0
If you need any help on anything just get the app (Socratic)
ryzh [129]3 years ago
4 0

Answer: 1

Step-by-step explanation: 863x14ysqrt9= 3 simplified is 1

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A handbag contains five coins, four keys,
Dmitry [639]

The expected number of mints taken out of the handbag = 0.94

For given question,

We have been given that a handbag contains five coins, four keys,

and eight mints.

Total number of items in the handbag would be,

= 5 coins + 4 keys + 8 mints

= 17 items

So, the total number of items in a handbag = 17

Here, two items are taken out of the handbag one after the other and not replaced.

We need to find the expected number of mints taken out of the handbag.

Number of items taken out = 2

Let x be the number of mints taken out of the handbag.

x can be 0, 1, or 2

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the two items taken out could be either coins or keys.

no. of coins + no. of keys = 9

So, the 1st pick = 9/17

and 2nd pick = 8/16

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For x = 1,

Assume that in the 1st pick mint is taken out.

So, 1st pick = 8/17

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This means, there are two possibilities for the second pick.

so, 2nd pick = 2 × 9/16

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For x = 2,

1st pick = 8/17

2nd pick = 7/16

⇒ P(x = 2) = 8/17 × 7/16

⇒ P(x = 2) = 56/272

So, the expected number of mints taken out of the handbag would be,

= 0 × 72/272 + 1 × 144/272 + 2 × 56/272

= 0.94

Therefore, the expected number of mints taken out of the handbag = 0.94

Learn more about the probability here:

brainly.com/question/3679442

#SPJ4

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