Resposta :
Resposta:
a)
[tex]m = \frac{7 + 15}{2} \\ m = \frac{22}{2} \\ m = 11[/tex]
b)
[tex]m = \frac{10 + 2 + 9}{3} \\ m = \frac{21}{3} \\ m = 7[/tex]
c)
[tex]m = \frac{4 + 7 + 15 + 9 + 10}{5} \\ m = \frac{45}{5} \\ m = 9[/tex]
d)
[tex]m = \frac{42 + 18 + 56 + 34}{4} \\ m = \frac{150}{4} \\ m = 37.5[/tex]
e)
[tex]m = \frac{0.4 + 3.2 + 0.6}{3} \\ m = \frac{4.2}{3} \\ m = 1.4[/tex]