\[Стр.\ 81.\]
\[\boxed{\mathbf{2.}}\]
\[\textbf{а)}\ 5,7645\]
\[\textbf{б)}\ 13,3000\]
\[\textbf{в)}\ 4,3386\]
\[\textbf{г)}\ 0,888\]
\[\textbf{д)}\ 0,07896\]
\[\textbf{е)}\ 0,1776\]
\[\boxed{\mathbf{3.}}\]
\[\boxed{\mathbf{4.}}\]
\[\textbf{а)}\ x\ :9,6 = 17,38\ \]
\[x = 17,38 \cdot 9,6\]
\[x = 166,848.\ \]
\[\textbf{б)}\ y\ :0,052 = 3,451\ \]
\[y = 3,451 \cdot 0,052\]
\[y = 0,179452.\]
\[\textbf{в)}\ x\ :0,5 = 9,756\]
\[x = 9,756 \cdot 0,5\]
\[x = 4,878.\]
\[\textbf{г)}\ y\ :2,43 = 45,9\]
\[y = 45,9 \cdot 2,43\]
\[y = 111,537.\]