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Free_Kalibri [48]
3 years ago
12

What is the probability that the test is positive for a randomly chosen person from this population? (Enter your answer to five

decimal places.) P(Positive test) =
Mathematics
1 answer:
iren2701 [21]3 years ago
3 0

Answer:

0.01260

Step-by-step explanation:

Data:

probability of population with cancer (positive) = 0.21

probability of population with cancer (negative) = 0.79

probability of population with cancer absent (positive)  = 0.06

probability of population with cancer absent (negative) = 0.94

probility for positive test = P( cancer (positive)) × P ( cancer absent (positive)

= = (0.21) * (0.06)\\= 0.01260

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4 years ago
Five years ago, Mark was twice as old as Max. In three years, Max's age will be 2/3 that of Mark. What is the sum of their ages
Marrrta [24]

Answer:

<em>4years</em>

Step-by-step explanation:

Let the present age of Mark be x

Let the present age of Max be y

Five years ago

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In three years,

mark = x+3

Max = y+3

Now if Max's age will be 2/3 that of Mark, then;

x+3 = 2/3(y+3)

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Solve 1 and 2 simultaneously

x - 2y = -5 ... 1

3x-2y = -3 .... 2

From 1: x = -5 + 2y

Substitute into 2:

3(-5+2y) - 2y = -3

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Recall thet x = -5+2y

x = -5+2(3)

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The sum of their ages will be x+y

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x+y = 4

<em>Hence the sum of their ages now is 4years</em>

<em></em>

<em></em>

3 0
3 years ago
PLEASE HELP ITSFOR GEOMETRY DO NOT WASTE ANSWERS WILL MARK BRAINLIEST
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Answer:

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Step-by-step explanation:

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3 0
4 years ago
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