Question

Afla media aritmetica a numerelor: a) 1 suprea 6; 2 supra 9;3supra 4; b) 3 supra 7; 1 supra 5; 2 ; 6; c) 1,2;0,15;3,4; d) 1,(5);0,1(5),1,5;

Answer 1

a)1/6.2/9
3/4
Ma=a+b+c/3
1/6+2/9+3/4/3=6+8+27/36/3=41/36/3=41/36*1/3=41/108

b)3/7
1/5
2.6

Ma=a+b+c+d/4
3/7+1/5+2+6/4=15+7+70+210/35/4=302/35/4=302/35*1/4=302/140=151/70

c)1,2,0.15,3.4
Ma=a+b+c/3
1.2+0.15+3.4/3=4.75/3=1.58(3)
succes