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Naya [18.7K]
4 years ago
11

For safety reasons, four different alarm systems were installed in the vault containing the safety deposit boxes at a Beverly Hi

lls bank. Each of the four systems detects theft with a probability of 0.99 independently of the others. What is the probability that when a theft occurs, all four systems will detect it?
A. (.99)4B. (.99) * 4C. (.01)4D. 4*(0.01)*(0.99)3E. 4*(0.99)*(0.01)3
Mathematics
1 answer:
Katena32 [7]4 years ago
7 0

Answer:

Step-by-step explanation:

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Step-by-step explanation:

1. Let y represent gallons in the tank, and x represent number of weeks.

<u>tank 1</u>

  y = 256 -3x . . . . . starts with 256 gallons, loses 3 per week

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The amounts in the tanks will be equal when the y-values are equal.

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The amount of water in the two tanks will be equal after 64 weeks.

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2. Let s and f represent the total cost of membership at Silver Gym and Fit Factor, respectively. Let x represent the number of months of membership.

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  f = 65 +20x

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  25 +30x = 65 +20x

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The two memberships will be the same price after 4 months.

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