\[\boxed{\text{283\ (283).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
Пояснение.
Решение.
\[\textbf{а)}\ M(7,45);\ \ K(1,15):\ \]
\[\left| \text{MK} \right| = |1,15 - 7,45| =\]
\[= | - 6,3| = 6,3.\]
\[\textbf{б)}\ M\left( - 5\frac{1}{3} \right);\ \ K\left( 3\frac{2}{3} \right):\]
\[\left| \text{MK} \right| = \left| 3\frac{2}{3} - \left( - 5\frac{1}{3} \right) \right| =\]
\[= \left| \frac{11}{3} + \frac{16}{3} \right| = \left| \frac{27}{3} \right| = 9.\ \]