Question

Se a = 0,444... e b = 0,333 , então b √a é igual a:
a)1/9
b)2/9
c)5/9
d)7/9

Answer 1

0,4444...
x=0,4444...
10x=4,4444...
10x-x=4,444...-0,4444..
9x=4
x=4/9

0,3333....
y=0,3333....
10y=3,3333...
10y-y=3,333...-0,333...
9y=3
y=3/9
y=1/3


b.Va=
1/3.V4/9=
1/3.2/3=
2/9

Resp: b