Question

Determinati media la geografie pe semestrul al II-lea a unui elev care a obtinut urmatoarele note:
a) 7,6,8,9;
b) 5,7,7,8;
c) 9,8,5,7;
d) 6,4,7,8.

Answer 1

a) 7.5
b) 6.75
c) 7.25
d) 6.25

Answer 2

     
$a)\;\;\;\;\frac{7+6+8+9}{4}=\frac{30}{4} =7,5 \\ \\ b)\;\;\;\;\frac{5+7+7+8}{4}=\frac{27}{4} =6,75 \\ \\ c)\;\;\;\;\frac{9+8+5+7}{4}=\frac{29}{4} =7,25 \\\\ c)\;\;\;\;\frac{6+4+7+8}{4}=\frac{25}{4} =6,25$