Question

Calculați media aritmetică a numerelor :
a) 12; 18; 24; b) 1/2; 3/4; 2/5; 1/6;
c) 0,30; 1,20; 4,5;
d) 24; 5/2; 3,5; 1,(3);

Answer 1

a) $\dfrac{12+18+24}{3}$=$\dfrac{54}{3}$=simplifici cu 3=18

b) $\dfrac{[tex]\dfrac{1}{2}+{3}{4}+{2}{5}+{1}{6}}{4}$=$\dfrac{109}{240}$

c) $\dfrac{0,30+1,20+4,5}{3}$=$\dfrac{6}{3}$=2

d) $\dfrac{24+[tex]\dfrac{5}{2}+3,5+1,(3)}{4}$=$\dfrac{188}{32}$=simplifici cu 4=$\dfrac{47}{6}$