Respostas

  • Usuário do Brainly
2014-07-01T17:05:40-03:00
S= \frac{-b}{a} = \frac{7}{2}

P= \frac{c}{a} = \frac{3}{2}

razão 1° : 2°

 \frac{7}{2} : \frac{3}{2} = \frac{7}{2} .  \frac{2}{3} = \frac{14}{6} = \frac{7}{3}

R= letra A