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LekaFEV [45]
3 years ago
11

Determine if the event described is independent or dependent.

Mathematics
1 answer:
WINSTONCH [101]3 years ago
5 0
They are dependent events, because the probability of the second event depends on the result of the first event

If you replace the marble before picking up the second marble, then the first event didn't affect the second result ant the events were independent.

Given that you did not replace the marble, the second pick up has different probailities depending on the first result.


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Answer: First half was 24 minutes

Step-by-step explanation:

Let the time taken to finish the second half be y.

Since the student used 2/3 of the second half time to finish the first half, first half = 2/3 × y = 2y/3

The entire exam is an hour which equals 60 minutes

First half + Second half = 60minutes

Note that first half is denoted as 2y/3 and second half is denoted by y.

2y/3 + y = 60

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Cross multiply

5y = 60 × 3

5y = 180

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y = 36

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Since first half is 2y/3, it will be:

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