Question

A) Determine o valor de cada quociente:

a)13/4 ÷ 5/4 =

b)(-7/8) ÷ 21/4 =

c) 32/7 ÷ (- 8/3) =

d) 4 ÷ (- 0,25) =

e) -10,5 ÷ (-0,5) =

f) 35/10 ÷ (-4,9) =


por favor! me ajuda.​

Answer 1

Resposta:

$\text{Leia abaixo}$

Explicação passo-a-passo:

$a)\: \dfrac{13}{4} \div \dfrac{5}{4} = \dfrac{13}{4} \times \dfrac{4}{5} = \dfrac{52\div 4}{20\div 4} = \dfrac{13}{5}$

$b)\: -\dfrac{7}{8} \div \dfrac{21}{4} = -\dfrac{7}{8} \times \dfrac{4}{21} = -\dfrac{28\div 28}{168\div 28} = -\dfrac{1}{6}$

$c)\: \dfrac{32}{7} \div -\dfrac{8}{3} = \dfrac{32}{7} \times -\dfrac{3}{8} = -\dfrac{96\div 8}{56\div 8} = -\dfrac{12}{7}$

$d)\: 4 \div (-0,25) = \dfrac{4}{1} \div -\dfrac{25}{100} = \dfrac{4}{1} \times -\dfrac{100}{25} = -\dfrac{400}{25} = -16$

$e)\: -10,5 \div (-0,5) = -\dfrac{105}{10} \div -\dfrac{5}{10} = -\dfrac{105}{10} \times -\dfrac{10}{5} = \dfrac{1050}{50} = 21$

$f)\: \dfrac{35}{10} \div (-4,9) = \dfrac{35}{10} \div -\dfrac{49}{10} = \dfrac{35}{10} \times -\dfrac{10}{49} = -\dfrac{350\div70}{490\div70} = -\dfrac{5}{7}$

Answer 2

Resposta:

e isso ja responderam

Explicação passo a passo: