Question

me ajudem porfavor e pra amanhã​

Answer 1

Resposta:

a)

$(\frac{2}{3} )^3\\2^3=8\\3^3=27\\\frac{8}{27}$

b)

$(\frac{1}{5}) ^3\\1^3=1\\5^3=125\\\frac{1}{125}$

c)

$(\frac{3}{4})^{-2} \\3^{-2}=\frac{1}{9}\\4^{-2}=\frac{1}{16}\\\frac{\frac{1}{9} }{\frac{1}{16} }=\frac{1}{9} *\frac{16}{1} =\frac{16}{9}$

d)

$(0,5)^{-2}\\\frac{1}{0,25}=4$

e)

$(\frac{5}{3})^{-1}\\ 5^{-1}=\frac{1}{5} \\3^{-1}=\frac{1}{3} \\\frac{1/5}{1/3}=\frac{1}{5} * \frac{3}{1} =\frac{3}{5}$