Question

calculati media aritmetica a urmatoarelor numere rationale pozitive:7 supra 2.,5 supra 4.,7 supra 8​

Answer 1

Răspuns:coroana??

$\frac{ \frac{7}{2} + \frac{5}{4} + \frac{7}{8} }{3} = \frac{ \frac{7 \times 4}{8} + \frac{5 \times 2}{8} + \frac{7}{8} }{3} = \frac{28 + 10 + 7}{3} = \frac{38 + 7}{3} = \frac{45}{3} = 15$