Question

Calculati media artitmetica a numerelor:
a) 0,25 ; 1,75 ; 4,5 ;            b) 1,2;4,3;7,1;          c) 0,(3); 2 supra3 ;2       d) 5; 17,2 ;  4,08.

Answer 1

(0,25+1,75+4,5)/3=6,5:3=2,1(6)
(1,2+4,3+7,1)/3=4,2
(0,(3)+2/3+2):3=(3/9+2/3+2):3=(3+6+18)/9:3=27/9*1/3=1
(5+17,2+4,08)/3=26,28:3=8,76

Answer 2

a) Ma=(0,25+1,75+4,5)/3
Ma=6,5/3
Ma= 2,1(6)

b) Ma=(1,2+4,3+7,1)/3
Ma=12,6/3
Ma=4,2

c)Ma=(0,(3)+2/3+2)/3
Ma=(3/9+2/3+2)/3
Ma=(1/3+2/3+6/3)/3
Ma=(9/3)/3
Ma=1

d) Ma=(5+17,2+4,08)/3
Ma=26,2
Ma=8,7(3)