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Alekssandra [29.7K]
3 years ago
10

Tỷ lệ người dân nghiện thuốc lá ở một vùng là 30%. Biết rằng tỷ lệngười bị viêm họng trong số những người nghiện thuốc lá là 60%

, còn tỷ lệngười bị viêm họng trong những người không nghiện thuốc là 40%.Chọn ngẫu nhiên một người và thấy người đó bị viêm họng, tìm xác suấtđể người đó nghiện thuốc lá.
Mathematics
1 answer:
Alexxx [7]3 years ago
7 0

Answer:

ask in English then I can help

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Answer:

x/3 - x/5 = 2/15x

Step-by-step explanation:

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30. What is the degree of the polynomial?
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The inverse variation equation shows the relationship between wavelength in meters, x, and frequency, y.
Vaselesa [24]

<u>Answer:</u> The wavelength for X-rays with the given frequency is 1\times 10^{-10}m

<u>Step-by-step explanation:</u>

To calculate the wavelength of light, we use the equation:

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Putting the values in above equation, we get:

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7 0
3 years ago
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***<br> -6<br> Simplify 21v6 ÷ (-7v-6)<br> O 0<br> -3y¹2<br> -3<br> 12<br> 0 -3<br> DONE<br> 0 0
-Dominant- [34]

Answer:

-3

Step-by-step explanation:

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3 0
2 years ago
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