Răspuns:
Explicație pas cu pas:
media artimetica = suma tuturor numerelor supra nr total de numere.
ma = [tex]\frac{a+b}{2}[/tex]
a) ma = [tex]\frac{2\sqrt7 + 3\sqrt7+ 4\sqrt7}{3} = \frac{9\sqrt7}{3} = 3\sqrt7[/tex]
b) ma = [tex]\frac{\frac{2}{3} + \frac{5}{3}+ \frac{11}{3}}{3} = \frac{\frac{18}{3}}3} = \frac{18}{3} * \frac{1}{3} = \frac{6}{3} = 2[/tex]
c) ma = [tex]\frac{3\sqrt3 -1}{2}[/tex]
