\[\boxed{\text{Страница}\text{\ 91.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[\boxed{286.}\]
\[Способ\ 1.\]
\[1)\ 62 \cdot 7 = 434\ (км).\]
\[2)\ 78 \cdot 7 = 546\ (км).\]
\[3)\ 434 + 546 = 980\ (км).\]
\[Ответ:980\ км.\]
\[Способ\ 2.\]
\[1)\ 62 + 78 = 140\ \left( \frac{км}{ч} \right).\]
\[2)\ 140 \cdot 7 = 980\ (км).\]
\[Ответ:980\ км.\]
\[\boxed{287.}\]
\[267 + x \cdot y\]
\[1)\ x = 9;\ \ y = 9:\]
\[267 + 9 \cdot 9 = 267 + 81 =\]
\[= 348\ (м) - ситца\ станет\ в\ \]
\[ателье.\]
\[Ответ:348\ м.\]
\[2)\ x = 150;\ \ y = 8:\]
\[267 + 150 \cdot 8 = 267 + 1200 =\]
\[= 1467\ (м) - ситца\ станет\ в\ \]
\[ателье.\]
\[Ответ:1467\ м.\]
\[\boxed{\text{Страница}\text{\ 92.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[\boxed{288.}\]
\[\boxed{289.}\]
\[Число:6.\]
\[240\ :6 = 40.\]
\[\boxed{290.}\]
\[y\] | \[1\] | \[2\] | \[3\] | \[4\] | \[5\] | \[6\] | \[7\] | \[8\] | \[9\] | \[10\] |
---|---|---|---|---|---|---|---|---|---|---|
\[170 + y \cdot 10\] | \[180\] | \[190\] | \[200\] | \[210\] | \[220\] | \[230\] | \[240\] | \[250\] | \[260\] | \[270\] |
\[x\] | \[49\] | \[54\] | \[320\] | \[560\] |
---|---|---|---|---|
\[10 \cdot x + 8\] | \[498\] | \[548\] | \[3208\] | \[5608\] |
\[\boxed{291.}\]
\[Число\] \[лошадей\] |
\[Число\ суток\] | |||||
---|---|---|---|---|---|---|
\[1\] | \[3\] | \[5\] | \[10\] | \[20\] | \[30\] | |
\[1\] | \[3\] | \[9\] | \[15\] | \[30\] | \[60\] | \[90\] |
\[2\] | \[6\] | \[18\] | \[30\] | \[60\] | \[120\] | \[180\] |
\[3\] | \[9\] | \[27\] | \[45\] | \[90\] | \[180\] | \[270\] |