Решение:
a) $$\sqrt{\frac{49}{64}} = \frac{\sqrt{49}}{\sqrt{64}} = \frac{7}{8}$$
б) $$\sqrt{\frac{36}{121}} = \frac{\sqrt{36}}{\sqrt{121}} = \frac{6}{11}$$
в) $$\sqrt{\frac{8}{50}} = \sqrt{\frac{4}{25}} = \frac{\sqrt{4}}{\sqrt{25}} = \frac{2}{5}$$
г) $$\sqrt{\frac{99}{11}} = \sqrt{9} = 3$$
д) $$\sqrt{\frac{4.5}{128}} = \sqrt{\frac{45}{1280}} = \sqrt{\frac{9}{256}} = \frac{\sqrt{9}}{\sqrt{256}} = \frac{3}{16}$$
е) $$\sqrt{\frac{2.7}{7.5}} = \sqrt{\frac{27}{75}} = \sqrt{\frac{9}{25}} = \frac{\sqrt{9}}{\sqrt{25}} = \frac{3}{5}$$
Ответ:
a) **7/8**
б) **6/11**
в) **2/5**
г) **3**
д) **3/16**
е) **3/5**