Question

please do it step by step...​

Answer 1

Answer:

$\frac{729}{64}$

Step-by-step explanation:

$( \frac{x}{y} ) = {( \frac{3}{2} )}^{ - 2} \div {( \frac{3}{7} })^{0}$

$( \frac{x}{y} ) = {(\frac{2}{3} )}^{2} \div 1$

$(since \: { (\frac{a}{b} })^{ - m} = { (\frac{b}{a} )}^{m} \: and \: \: {a}^{0} = 1)$

$\frac{x}{y} = \frac{4}{9}$

$therefore \: \: {(\frac{x}{y} )}^{ - 3} = { (\frac{4}{9}) }^{ - 3} = ({ \frac{9}{4}) }^{3} = \frac{729}{64}$

hope it helps...