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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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Im stuck on this question plz help
astra-53 [7]

Answer:

C) x = 20.8

Step-by-step explanation:

Since the line with the length equal to 6 forms a right angle on line x then we know it is perpendicular and bisects it.

Plug in the values: a^2 + b^2 = c^2

a^2 + 6^2 = 12^2

a^2 + 36 = 144

a^2 + 36 - 36 = 144 - 36

a^2 = 108

√a^2 = √108

a = √108

a = 10.3923048454

a = 1/2 x

2a = x

2(10.3923048454) = x

x = 20.7846096908

x = 20.8

8 0
3 years ago
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PLS HELP> is this a examples of speed velocity and acceleration. a plane flying 300 mi/hr west toward California
rusak2 [61]

Answer:

No

Step-by-step explanation:

Speed: 300 mi/hr, Gives how fast you go

Velocity: 300 mi/hr west, includes speed and direction

Acceleration: No, it does not say a starting speed or if it was a constant speed.

Hope this helps :)

7 0
3 years ago
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Pls help, will mark brainliest
SashulF [63]

Step-by-step explanation:

\frac{\pi}{2}  = 90

its 1/4 of the circle

circle circumference:

8 \times \pi

we need 1/4 of it, so its

2 \times \pi = 6.28

5 0
3 years ago
If two figures are similar, what can you say about them? Be specific and give at least 3 details.
Nana76 [90]

Answer: Two figures are said to be similar if they are the same shape. In more mathematical language, two figures are similar if their corresponding angles are congruent , and the ratios of the lengths of their corresponding sides are equal.

Step-by-step explanation:

3 0
3 years ago
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Mashcka [7]
Fourths, then b. Sorry if late.
5 0
3 years ago
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