[tex]a) \ \frac{y}{x} = \frac{\sqrt{64}}{64} = \frac{8}{64}} = \frac{1}{8} = 0,125\cdot100\% = 12,5\%\\\\b) \ \frac{y}{x} = \frac{\sqrt[3]{64}}{64} = \frac{4}{64} = \frac{1}{16} = 0,0625\cdot100\% = 6,25\%\\\\c) \ \frac{y}{x} =\frac{\sqrt[3]{\frac{1}{64}}}{\frac{1}{64}}=\frac{\frac{1}{8}}{\frac{1}{64}} =\frac{64}{8} =8\cdot100\% = 800\%[/tex]
[tex]d) \ \frac{y}{x} = \frac{\sqrt[3]{\frac{1}{64}}}{\frac{1}{64}}=\frac{\frac{1}{4}}{\frac{1}{64}} = \frac{64}{4} = 16\cdot100\% = 1600\%[/tex]
