Question

Media aritmetica a doua nrceste 83,54 daca unul dintre nr este 89,28 afla celalat nr

Answer 1

m.a.=(a+b):2=83,54
a=89,28
m.a.=(89,28+b):2=83,54
89,28+b=83,54×2
89,28+b=167,8
b=167,8-89,28
b=77,8

verificare

m.a.=(89,28+77,8):2=167,8:2=83,54 (Adevarat )