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satela [25.4K]
2 years ago
10

Simplify ( 1/2 x− 3/8 )÷ 1/3 + 4/7 (5− 1/4 x)

Mathematics
1 answer:
Korvikt [17]2 years ago
8 0

Answer:

19x/14 + 97/56

Step-by-step explanation:

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How old am i if 200 reduced by 2 times my age is 48?
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A chemical plant has an emergency alarm system. When an emergency situation exists, the alarm sounds with probability 0.95. When
Katen [24]

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the probability that a real emergency situation exists is 0.16 (16%)

Step-by-step explanation:

defining the event A= the alarm sounds ,we have

P(A)= probability that an emergency situation exists * probability that the alarm sounds given that an emergency situation exists + probability that a emergency situation does not exist * probability that the alarm sounds given that an emergency situation does not exist = 0.004* 0.95+ 0.996 * 0.02 = 0.02372

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P(E/A) =  probability that an emergency situation exists given that the alarm has sounded

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