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suma a patru numere este [tex] \frac{120}{49} [/tex] . Calculati media aritmetica a acestora.
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Răspuns :

[tex] \frac{30}{49} [/tex]
Ma=[tex] \frac{ a_{1}+ a_{2}+...+ a_{n} }{n} [/tex]

[tex] \frac{ \frac{120}{49} }{4}= \frac{120}{49}* \frac{1}{4}(simplcu 4)= \frac{30}{49}* \frac{1}{1} = \frac{30}{49} [/tex]