1.
[tex]0.(2) = \frac{2}{9} \\ \\ 0.18 = \frac{18}{100} = \frac{9}{50} [/tex]
[tex]mg = \sqrt{ \frac{2}{9} \times \frac{9}{50} } = \sqrt{ \frac{1}{25} } [/tex] = 1/5
2.
[tex] |2x - 1| \leqslant 3 \\ \\ - 3 \leqslant 2x - 1 \leqslant 3 \\ \\ - 2 \leqslant 2x \leqslant 4 \\ \\ - 1 \leqslant x \leqslant 2 \\ \\ [/tex]
A = {-1, 1, 2}
