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Dahasolnce [82]

2 years ago

11

PLEASE HELP!!! A blueprint for a fence has a scale of 1:40. The fence in the blueprint is 6in. What is the length of the actual

fence? Answer Choices: 1. 240 feet 2. 20 feet 3. 20 inches 4. 72 feet

1 answer:

EastWind [94]2 years ago

4 0

1 : 40 = 6 : 240

On the ground the fence would be 240 inches long

240 / 12 = 20 feet long fnce

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Using the binomial distribution, it is found that there is a 0.857 = 85.7% probability that at least 2 of the rolls come up as a 3 or a 4.

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Binomial probability distribution

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p is the probability of a success on a single trial.

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The desired probability is:

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For more on the binomial distribution, you can check brainly.com/question/24863377

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Possible outcomes for 6 are: {(1,5), (2,4), (3,3), (5,1),(4,2)} Count 5

Possible outcomes for 9 are: {(3,6), (4,5), (5,4),(6,3)} Count 4

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Possible cases for sum 5: {(1,4), (2,3), (3,2),(4,1)} Count 4

Possible cases for sum 6: {(1,5), (2,4), (3,3), (5,1),(4,2)} Count 5

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Possible outcomes for 3 are: {(1,2), (2,1)} Count 2

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