If 80 of 100 are not defective, the probablity of randomly selecting one of them is 80/100 = 4/5.
Step-by-step explanation:
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L n l = 5
n = -5 or n = 5
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Rebecca was 2 at first, but 2 years later she is 4. Leslie was 10 at first, but 2 years later she is 12. 12 is 3 times greater than 4.
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First off subtract the cost of the computer from the total cost
1,220-995 = 225
Then divide 225 by 3 to get the price of each of the software
225/3 = $75