Question

calcule a raiz quadrada de cada racional :

A) √0,09=
B) √121/169=
C) √0,25=
D) - √0,64​

Answer 1

a)

$\sqrt{0.09} = \sqrt{ \frac{9}{100} } = \frac{3}{10} = 0.3$

b)

$\sqrt{ \frac{121}{169} } = \frac{ \sqrt{121} }{ \sqrt{169} } = \frac{11}{13}$

c)

$\sqrt{0.25} = \sqrt{ \frac{25}{100} } = \frac{ \sqrt{25} }{ \sqrt{100} } = \frac{5}{10} = 0.5$

d)

$- \sqrt{0.64} = - \sqrt{ \frac{64}{100} } = - \frac{ \sqrt{64} }{ \sqrt{100} } = - \frac{8}{10} = - 0.8$