Question

Calculati media aritmetica a numerelor:
a)x=-1/5+7/5+4/5
y=3 intregi si 1/7-6/7
b)x=2/5+7/10-1/10
y=3 intregi si 1/2-0,5
z=3,75-3/4-1
Va rog sa scrieti repede este urgent!!!

Answer 1

a)
X = -1/5 + 7/5 + 4/5 = 10/5 = 2
Y = 3 1/7 - 6/7 = 22/7 - 6/7 = 16/7

Ma = (X+Y) :2 = (2+16/7) : 2 = (14/7 +16/7) :2 = 30/7 :2 = 30/14 = 15/7

b)
x=2/5+7/10-1/10 = 4/10+7/10-1/10 = 10/10 = 1

Y =3 intregi si 1/2-0,5
Y = 7/2 - 5/10 = 7/2 - 1/2 = 6/2 = 3

Z = 3,75-3/4-1
Z = 3,75 - 0,75 - 1
Z = 3 - 1
Z = 2

Ma = (X+Y+Z) : 3 = (1 + 3 + 2) :3 = 6:3 = 2