Question

What is the reciprocal of (2/7)-²

Answer 1

Answer:

4/49

Step-by-step explanation:

${ (\frac{2}{7}) }^{ - 2} \\ = {( \frac{7}{2}) }^{2} \\ = {( \frac{2}{7} )}^{2} {reciprocal \: of \: {( \frac{7}{2} )}^{2}} \\ = \frac{4}{49}$