Răspuns:
[tex]a) \: 1 \frac{1}{7} = \frac{8}{7} \\ media \: aritmetica = (\frac{8}{7} + \frac{3}{125} ) \div 2 = (\frac{1000 + 21}{875} ) \div 2 = \frac{1021}{875} \times \frac{1}{2} = \frac{1021}{1750} \\ media \: geometrica = \sqrt{ \frac{8}{7} \times \frac{3}{125} } = \sqrt{ \frac{24}{875} } = \frac{2 \sqrt{6} }{5 \sqrt{35} } [/tex]
