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Zina [86]
3 years ago
10

You are on the 2nd floor, go down 3 floors, and back up 7 floors. On what floor are you on now? *

Mathematics
2 answers:
timama [110]3 years ago
5 0

Movement in this problem can be thought as addition or subtraction. Going up a floor means taking your current floor and adding one. Same with going to a lower floor but with subtraction.

The first movement is going down the flight of stairs to reach the 2nd floor - 3.

Why are we using subtraction? Because we are going to a lower level.

2nd floor - 3 = -1 floor or some might consider this the basement.

Now, the next movement is going up 7 floors. This is going to be easy since we know what to do.

-1 floor + 7 = 6th floor

Hope this answer provides a clear explanation!

scZoUnD [109]3 years ago
3 0

Answer:

6th floor

Step-by-step explanation:

2-3+7

-1+7

6

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6 0
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olga nikolaevna [1]

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Answer:

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And we can find this probability like this:

P(Y>1 \cap Y

And we can replace the values and we got:

P(Y>1 \cap Y

Step-by-step explanation:

For this case we define the random variable Y as: the number of slices of cheesecake left on the platter after the first serving. And we have the following distribution for Y:

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P(Y) | 0.005  0.114  0.429  0.381  0.071

And we want to find the following probability:

P(Y>1 \cap Y

And we can find this probability like this:

P(Y>1 \cap Y

And we can replace the values and we got:

P(Y>1 \cap Y

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3 years ago
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