Question

Efectuati calculele:
a)6,(3):(-38)
b)-1•3/4:(-4•2/3)
c)4V2:2
d)20V3:(-4)
e)-0,5V5:5
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Answer 1

Răspuns:

a)

$6.(3) = 6 \frac{3}{9} = 6 \frac{1}{3} = \frac{19}{3 }$

$\frac{19}{3} \times ( - \frac{1}{38} ) = - \frac{1}{6}$

b)

$- 1\frac{3}{4} = - \frac{7}{4}$

$- 4 \frac{2}{3} = - \frac{14}{3}$

$- \frac{7}{4} \times ( - \frac{3}{14} ) = \frac{3}{8}$

c)

$4 \sqrt{2} \div 2 = 2 \sqrt{2}$

d)

$20 \sqrt{3} \div ( - 4) = - 5 \sqrt{3}$

e)

$- \frac{ \sqrt{5} }{2} \times \frac{1}{5} = - \frac{ \sqrt{5} }{10}$