a) 72,42 = 7242/100 => Racionalb) x = 0,727272....100 x = 72,7272....100 x - x = 99 x = 72, logo x = 72/99 = 8/11 => Racionalc) x = 4,212121...100 x = 421,212121100x - x = 99x = 421 - 4 = 417, logo x = 417/99 = 139/33 => Racionald) x = 23,46666...10x = 234,6666...100x = 2346,6666....100x - 10x = 90x = 2346 - 234 = 2112, logo x = 2112/90 = 352/15 = Racional
1
0
Faça como milhares de estudantes: teste grátis o Passei Direto
Compartilhar