Question

me ajuda alhm PFV dou mais 100 pontos

Answer 1

Resposta:

1. a) MMC = 15

$-\frac{9}{15} + \frac{5}{15} = -\frac{4}{15}$

b) $-\frac{6}{4} . \frac{1}{6} =$

$\\-\frac{6}{24}$

c) $\frac{11}{4} + \frac{1}{2} . \frac{1}{2} =$

$\frac{11}{4} + \frac{1}{4} =$

$\frac{12}{4} =$

3

d) $\frac{11}{2} . ( \frac{-7}{6} . \frac{3}{-14} - \frac{11}{4} ) =$

$\frac{11}{2} . (\frac{-7}{6} . \frac{-6}{28} - \frac{77}{28} ) =$

$\frac{11}{2} . (\frac{-7}{6} . \frac{83}{28}) =$

$\frac{11}{2} . \frac{-581}{168} =$

$\frac{6391}{336}$

e) (0,4 - 1,18 + (-0,3)) - 0,6 =

(0,4 - 1,18 - 0,3) - 0,6 =

-1,08 - 0,6 =

1,68

f) (-1,25) . (+0,9) =

-112,5

g) (-0,36) : (1,8) =

0,2

2. a) $-\frac{9}{25}$

b) $(\frac{1}{3})^{4} =$

$\frac{1}{81}$

c) 0,343

d) $(-\frac{2}{10})^{5} =$

$-\frac{32}{100000}$

3. a) 3,7 . $10^{8}$

b) 2,5 : $10^{4}$

Espero ter ajudado.