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katrin2010 [14]
3 years ago
14

Elizabeth lives in San Francisco and works in Mountain View. In the morning, she has 3 transportation options (take a bus, a cab

, or a train) to work, and in the evening she has the same 3 choices for her trip home.
If Elizabeth randomly chooses her ride in the morning and in the evening, what is the probability that she'll use a cab exactly one time?
Mathematics
1 answer:
Lesechka [4]3 years ago
6 0

Answer:

4/9

Step-by-step explanation:

The possibilities of transportation: (The first will be for morning, second will be for afternoon)

B, B

B, C

B, T

C, B

C, C

C, T

T, B

T, C

T, T

It is clearly seen that there are 9 transportation options.

(Using cab 1 time we have BC, CB, CT, TC. So four of the transportation methods use cab one time.)

Therefore, the probability that she will use a cab only once is 4/9.  

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Using the results from parts D through G, write an expression that represents the number of years elapsed between the disappeara
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The mathematical expression to represent the number of years elapsed since the disappearance of Helike until the end of the American Civil War is:

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To reach this conclusion we had to search for additional information and found that the year of the disappearance of the Greek city of Helike is -⅕ times the year the American Civil War ended.

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According to the previous data, it can be inferred that the expression that represents the number of years elapsed between the disappearance of the Greek city of Helike and the end of the US Civil War is:

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Note: This question is incomplete because the is some information missing. However, I can answer it based on my prior knowledge.

Learn more about Civil War in: brainly.com/question/14234520

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