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vodka [1.7K]
3 years ago
8

Three ladders measure 5 3/4 meters, and 7 1/4 meters in length. What is the difference between the longest and shortest lengths?

Mathematics
1 answer:
Dovator [93]3 years ago
3 0
7 1/4 - 5 3/4= 1 1/2 because you can either 1) change it into decimals: 7.25-5.75 and do simple subtraction or... 2) u can change the 7 to a 6 and add 4 to the numerator of 1/4 making the equation 6 5/4 - 5 3/4 = 1 2/4 which simplified to 1 1/2 I hope I didn’t confuse you! :))
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Answer: 0.992

Step-by-step explanation:

Given : The three systems detects when a trespass occurs with a probability of 0.98 independently of the others.

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Since each system works independently ,

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Then the  probability that when a trespass occurs, at least one of the systems will detect it

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= 1- 0.008=0.992

Hence, the probability that when a trespass occurs, at least one of the systems will detect it = 0.992

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Step-by-step explanation:

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