Question

calculați media aritmetică a numerelor: 2,(3);3 supra 5 si 0,1(3)​

Answer 1

2,(3) = $\frac{23-2}{9}$ = $\frac{21}{9}$ = $\frac{7}{3}$

3 supra 5 = $\frac{3}{5}$

0,1(3) = $\frac{13-1}{90}$ = $\frac{12}{90}$ = $\frac{2}{15}$

mₐ = ($\frac{7}{3}$ + $\frac{3}{5}$ + $\frac{2}{15}$) : 3

mₐ = ($\frac{21}{15}$ + $\frac{9}{15}$ + $\frac{2}{15}$) : 3

mₐ = $\frac{32}{15}$ : 3

mₐ = $\frac{32}{15}$ × $\frac{1}{3}$

mₐ = $\frac{32}{45}$