Question

find the mean of x+3,x+5,x+7,x+9 and x+11​

Answer 1

mean = sum of all observations/total no. of observations

here, mean= x+x+3+x+5+x+7+x+10/5

9 = 5x+25/5

5x+25 = 45

5x = 20

x = 4

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Answer 2

$\large{\green{\bf{Hola!!}}}$

$Mean={\frac{Sum \:of \: observations}{No.\:of\: observations}}$

${Mean={\frac{x+3+x+5+x+7+x+9+x+11}{5}}}$

${\bf{\red{\huge{Mean={\frac{5x+35}{5}}}}}}$