Question

3 și 4 va rog dau coroana

Answer 1

3. a)
a+b+c+d+e=?
(a+b+c+d+e)/5=23
a+b+c+d+e= 23 x 5
a+b+c+d+e= 115

b) (a+b+c+d)=56
Media aritmetica: (a+b+c+d)/4=56/4=14

4. a+b+c=98

(a+b)/2=26
a+b=26 x 2
a+b=52

(b+c)/2=37
b+c=37 x 2
b+c=74

a+b+c=98
52+c=98
c=98-52
c=46

b+c=74
b+46=74
b= 74-46
b=28

a+b=98
a+28=52
a=52-28
a=24
Răspuns: a=24, b=28, c=46.