determine a fração geratriz das dizimas periódicas compostas:
a)0,766666...
b)2,14272727...
c)0,56666...
d)1,4333...
e)2,344444...
f)9,18222...
g)1,2343434...
h)0,133333...
me ajudem pfvv e pra segunda-feira
Soluções para a tarefa
Resposta:
Explicação passo a passo:
a.
x=0,7666...
10x=7,666...
100x=76,666...
100x-10x=76,666...-7,666..
90x=69
x=69/90
b.
2,1427272727...
x=2,14272727...
100x=214,272727....
10000x=21427,272727...
10000x-100x=21427,272727...-214,272727..
9900x=21213
x=21213/9900
c.
x=0,5666...
10x=5,6666...
100x=56,666...
100x-10x=56,666-5,6666...
90x=51
x=51/90
d.
x=1,4333...
10x=14,333...
100x=143,333...
100x-10x=143,333..-14,333...
90x=129
x=129/90
e.
x=2,34444...
10x=23,444..
100x=234,444...
100x-10x=234,444...-23,444...
90x=211
x=211/90
f.
x=9,18222....
100x=918,2222...
1000x=9182,2222...
1000x-100x=9182,222...-918,222...
900x=8264
x=8264/900
g.
x=1,234343434...
10x=12,343434...
1000x=1234,3434...
1000x-10x=1234,343434...-12,343434...
990x=1222
x=1222/990
h.
x=0,13333....
10x=1,3333....
100x=13,3333...
100x-10x=13,3333....-1,3333...
90x=12
x=12/90