Question

Vă rog rapid ex:3,4.Dau coroană +/20 pct. :-)

Answer 1

3) (a+b+c+d)/4=12,53
a+b+c+d=12,53x4
a+b+c+d=50,12
d=12,8
a+b+c+12,8=50,12
a+b+c=50,12-12,8
a+b+c=37,32
Ma=(a+b+c)/3=37,32/3=12,44

4) (a+b+c)/3=42,8
a+b+c=42,8x3
a+b+c=128,4
a=2b
b=c+2,7  rezulta c=b-2,7
2b+b+b-2,7=128,4
4b=128,4+2,7
b=131,1/4=32,775
a=2xb=2x32,775=65,55
c=b-2,7=32,775-2,7=30,075