Question

URGENT!

Media aritmetica a doua numere este 21,35, iar celalalt numar este 18,35. Determinati celalalt numar.

Answer 1

(a+b):2= 21.35 => a+b=42.7

daca a este egal cu 18.35 => 18.35+b=42.7 => b=42.7-18.35 => b=24.35

Answer 2

$m_a=\frac{a+b}{2} \\\\ m_a=21,35 \\\\ \frac{a+b}{2}=21,35 \\\\ a+b=2*21,35 \\\\ a+b=42,7 \\\\ a=18,35 \\\\ b=42,7-18,35 \\\\ \boxed{b=24,35}$