a) \(\sqrt{11^2 + 60^2} = \sqrt{121 + 3600} = \sqrt{3721} = 61\)
б) \(\frac{5}{\sqrt{4225}} - \frac{\sqrt{25}}{\sqrt{169}} = \frac{5}{65} - \frac{5}{13} = \frac{1}{13} - \frac{5}{13} = -\frac{4}{13}\)
в) \(-3\sqrt{0.49} + 2.6 = -3 \cdot 0.7 + 2.6 = -2.1 + 2.6 = 0.5\)
Ответ:
a) 61
б) -4/13
в) 0.5