Răspuns :
[tex] media \: aritmetica = \frac{suma \: nr}{numarul \: de \: numere?} [/tex]
[tex] \frac{a + b + c}{3} = 5[/tex]
a+b+c=15
a=-3 ==> b+c=15+3=18
b=1 》c=18-1=17
[tex] \frac{ - 3+ 17 + 1}{3} = 5[/tex]
b+c totul supra 2=1+17=18 supra 2=9
[tex] \frac{a + b + c}{3} = 5[/tex]
a+b+c=15
a=-3 ==> b+c=15+3=18
b=1 》c=18-1=17
[tex] \frac{ - 3+ 17 + 1}{3} = 5[/tex]
b+c totul supra 2=1+17=18 supra 2=9
Ma = 5 => S = 5 x 3 = 15
a + b + c = 15
a = -3 } => b + c = 15 - (-3) = 15 + 3 = 18
Ma1 = (b + c)/2 = 18/2 = 9
a + b + c = 15
a = -3 } => b + c = 15 - (-3) = 15 + 3 = 18
Ma1 = (b + c)/2 = 18/2 = 9