The scores of 10 students from their test are 18,13,15,20,19,18,12,14,15,17 and 15. Find the mean, median and mode.

moymoyegit
2022-05-08

The scores of 10 students from their test are 18,13,15,20,19,18,12,14,15,17 and 15. Find the mean, median and mode.

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Relating an expression to two similar ones

Is it possible to express C solely in terms of A and B, where

$A={\displaystyle \frac{m}{x+z}},B={\displaystyle \frac{n}{y+z}},C={\displaystyle \frac{m+n}{x+y+z}}$

and $m,n,x,y,z>0\text{}?$

If not, how close can I get?

Is it possible to express C solely in terms of A and B, where

$A={\displaystyle \frac{m}{x+z}},B={\displaystyle \frac{n}{y+z}},C={\displaystyle \frac{m+n}{x+y+z}}$

and $m,n,x,y,z>0\text{}?$

If not, how close can I get?