Question

By what number should (2/7)^-2 be divided so that the quotient is 49

Answer 1

Step-by-step explanation:

$( \frac{2}{7} {})^{ - 2} \div x = 49 \\ {( \frac{7}{2} )}^{ 2} \times \frac{1}{49} = x \\ x = \frac{49}{4} \times \frac{1}{49} \\ x = \frac{1}{4}$

1/4 must be devided to get 49