Question

Afla 4 numere consecutive a caror medie aritmetica este 11.5 .

Answer 1

[tex] \frac{x+x+1+x+2+x+3}{4}=11,5 \\ 4x+6=46 \\ 4x=40 \\ x=10 [/tex]
numerele cautate sunt:
10;11;12;13

Answer 2

(x+x+1+x+2+x+3)/4=11.5----->4x+6=46----->4x=40------>x=10