c]
[tex]\sqrt{\frac{9}{16}}=\frac{\sqrt9}{\sqrt{16}}=\frac{\sqrt{3^2}}{\sqrt{4^2}}=\frac{3}{4}\\[/tex]
d]
[tex]\sqrt{2\frac{7}{9}}=\sqrt{\frac{2\cdot9+7}{9}}=\sqrt{\frac{18+7}{9}}=\sqrt{\frac{25}{9}}=\frac{\sqrt{25}}{\sqrt9}=\frac{\sqrt{5^2}}{\sqrt{3^2}}=\frac{5}{3}=1\frac{2}{3}\\[/tex]
e]
[tex]\sqrt{12\frac{1}{4}}=\sqrt{\frac{12\cdot4+1}{4}}=\sqrt{\frac{48+1}{4}}=\sqrt{\frac{49}{4}}=\frac{\sqrt{49}}{\sqrt4}=\frac{\sqrt{7^2}}{\sqrt{2^2}}=\frac{7}{2}=3\frac{1}{2}\\[/tex]
