Mathematics
13.06.2020 10:11
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There are 5 students in a room. The mean age is 20.4 years, and the median age is
There are 5 students in a room. The mean age is 20.4 years, and the median age is 19
9 years.
If the youngest person leaves and is replaced by a person who is even younger, what happens to the mean and median?
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If the youngest person leaves and is replaced by a person who is even younger, what happens to the mean and median?
ccory0626
5,0(23 marks)
Standard form is x + y = number
y = 2/5 x - 6
y - 2/5 x = -6
-2/5 x + y = -6
In standard form, the coefficient of x cannot be negative and the coefficient of x and y cannot be a fraction.
Therefore we have to multiply the whole equation by -1 and then by 5.
-2/5 x + y = -6
2/5 - y = 6
2 - 5y = 30
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