• Matéria: Matemática
  • Autor: laurafrancco
  • Perguntado 8 anos atrás

Resolva as expressões:
a) 2/5 x 1,3333....
b)5/9 : 0,56565656.....

Respostas

respondido por: andreluizdeoliveira
1
a)
1,333...=1+0,333...=1+ \frac{3}{9}= \frac{12}{9}= \frac{4}{3}

Portanto,

 \frac{2}{5}.1,333...= \frac{2}{5}. \frac{4}{3}= \frac{2.4}{5.3}= \frac{8}{15}

b)
0,565656...= \frac{56}{99}

Portanto,

 \frac{5}{9}: \frac{56}{99}= \frac{5}{9}.\frac{99}{56}=\frac{5}{1}. \frac{11}{56}= \frac{55}{56}
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