Question

Calculați media aritmetica a numerelor :
a)x= (12,1-11,9):4+4,5 si y=[(2,3+1,5)•12,5]:(2,05-1,25)

Answer 1

x= (12,1-11,9):4+4,5

x=0.2:4+4.5

x= 0.05+ 4.5 = 4.55

y=[(2,3+1,5)•12,5]:(2,05-1,25)

y=(3,8*12.5):0.8

y=47.5:0.8

y=59.375
ma = (4.55+59.375)/2

ma=63.925/2

ma=31.9625