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alina1380 [7]
2 years ago
8

Plz answer the question just tell me were they belong plz worth 10 points and brainlest!

Mathematics
1 answer:
arsen [322]2 years ago
5 0
Answer:

1. 2^x =64 is option number 4. 6

2. x= (2/5)^3 is option number 1. 8/125

3. 3•(3^4) = 3^x is option number 3. 5

4. 16/25 = x^2 is option number 2. 4/5
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Ví dụ 1.5. Một người đi mua hàng 3 lần. Xác suất lần đầu mua được hàng tốt là 0,7.
vodka [1.7K]

Answer:

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Step-by-step explanation:

Example 1.5. A person goes shopping 3 times. The probability of buying a good product for the first time is 0.7.

If the first time you can buy good products, the next time you can buy good products is 0.85;  (I interpret this as, if you buy a good product, then the next time you buy a good product is 0.85).

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b) Only the second time that person buys a bad product.

P(Good on 1st shopping event AND Bad on 2nd shopping event AND Good on 3rd shopping event) =

P(Good on 1st shopping event) *P(Bad on 2nd shopping event | Good on 1st shopping event) * P(Good on 3rd shopping event | 1st is Good and 2nd is Bad shopping events) =

(0.7)(1-0.85)(1-0.6) =

(0.7)(0.15)(0.4) =

0.042

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