Question

media aritmetica a doua nr naturale consecutive pare este 59. Aflati numerele.

Answer 1

a=primul numar
a+1=al doilea numar

$M_{a}$ = $\frac{a+ (a+1)}{2}$ => a+(a+1)=M_{a} · 2=59 ·2= 118.

a+(a+1)=118
2a+1=118
2a=118-1
2a=117
a=117
a=58,5

Answer 2

Ma=( a+b):2=59
Ma=59*2
Ma=118
verificare : (59+59 ):2=59 ⇒118:2=59