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ser-zykov [4K]
4 years ago
9

During last year the number of students in RSM increased by 100%. This year, the number of students increased by 150%. What perc

ent of the number of students now was the number of students two years ago?
Mathematics
1 answer:
irina [24]4 years ago
5 0

Answer:20%


Step-by-step explanation:so we start with x as the year before. then we get 2x from 100%. this year it would be 2x times 150% which is equal to 3x added to the year before. That would be 5x. 5x compared to x people would think is 500% but it is switched the other way to 20%.


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4/8 = (2/4) =1/2 (if you divide up and down by the same number)

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

In a normal distribution with mean  and standard deviation , the z-score of a measure X is given by:

The z-score measures how many standard deviations the measure X is from the mean, above or below.  

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