+495 The first thing you should recognize about 16/49 is that both the numerator and denominator of that fraction are perfect squares. Which means you can very easily take the square root ... like this:
\({k}^{2} = \frac{16}{49} \)
\(\sqrt{{k}^{2}} = k = \frac{\sqrt{16}}{\sqrt{49}} = \frac{4}{7}\)
The final asnwer is 4/7. (or -4/7)
