ГДЗ по алгебре 7 класс Макарычев Задание 386

\[\boxed{\text{386\ (386).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]

\[\textbf{а)}\ 9 \cdot \left( \frac{5}{6} \right)^{2} = 9 \cdot \frac{25}{36} = \frac{25}{4} =\]

\[= 6\frac{1}{4} = 6,25\]

\[\textbf{б)}\ \left( 9 \cdot \frac{5}{6} \right)^{2} = \left( 3 \cdot \frac{5}{2} \right)^{2} = \left( \frac{15}{2} \right)^{2} =\]

\[= \frac{225}{4} = 56,25\]

\[\textbf{в)}\ ( - 10)^{6} = 1\ 000\ 000\]

\[\textbf{г)} - 10^{6} = - 1\ 000\ 000\]

\[\textbf{д)}\ 4 \cdot 5^{3} = 4 \cdot 125 = 500\]

\[\textbf{е)} - 5 \cdot 2^{5} = - 5 \cdot 32 = - 160\]

\[\textbf{ж)} - 2^{4} \cdot 15 = - 16 \cdot 15 = - 240\]

\[\textbf{з)}\ 2700 \cdot ( - 0,1)^{3} =\]

\[= 2700 \cdot ( - 0,001) = - 2,7\]