Ответ:
- \(\sqrt{52+29}=\sqrt{81}=9\).
- \(\frac{12}{\sqrt{25}}-\sqrt{0.09}=\frac{12}{5}-0.3=2.4-0.3=2.1\).
- \(\sqrt{0.16}+\sqrt{1.21}=0.4+1.1=1.5\).
- \(\sqrt{0.64}-\frac{1}{3}\sqrt{18-9}=0.8-\frac{1}{3}\cdot3=0.8-1=-0.2\).
Ответ: а) 9; б) 2,1; в) 1,5; г) −0,2.
