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Hurrem4567
a fost răspuns

Calculati media aritmetica a numerelor:
[tex] 12\frac{2}{5} [/tex] si [tex] 17\frac{3}{5} [/tex]

Răspuns :

[tex]12\frac{2}{5}=\frac{60+2}{5}=\frac{62}{5}\\ 17\frac{3}{5}=\frac{85+3}{5}=\frac{88}{5}\\ m_a=\frac{\frac{62}{5}+\frac{88}{5}}{2}=\\ =\frac{\frac{150}{5}}{2}=\\ =\frac{30}{2}=15[/tex]

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