Ответ:

  1. \(\frac{\sqrt{49}}{\sqrt{36}}=\frac76\).
  2. \(\frac{\sqrt{25}}{\sqrt{100}}=\frac{5}{10}=\frac12\).
  3. \(\frac{\sqrt{81}}{\sqrt9}=\frac93=3\).
  4. \(\frac{\sqrt{64}}{\sqrt{121}}=\frac8{11}\).