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serg [7]
3 years ago
10

9-5(4-2) -------------- 3+5

Mathematics
1 answer:
nirvana33 [79]3 years ago
5 0

Answer:

-1/8

Step-by-step explanation:

9-5(4-2)

--------------

3+5

First do the parentheses

9-5(2)

--------------

3+5

Then calculate the top and bottom of the fraction

We need to multiply and divide first

9-10

--------------

3+5

-1

--------------

8

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Step-by-step explanation:

The probability of getting at least 1 defective hard disk among the 5 (P(X>0)) is equal to 100% minus the probability of getting none defectives (1-P(X=0)).

If 23 out of 25 hard disks are non-defective, the probability is:

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The probability that there is at least 1 defective hard disk is 0.3667 or 36.67%.

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