Ответ:
20г
Пошаговое объяснение:
Масса 250 семян тыквы =20г.
70 км/час * 12 час = 840 км проедет первый авто (то есть окажется в другом городе)
55 км/час * 12 час = 660 км проедет второй авто (след. он удалится от второго авто на 660 км за 12 часов)
Ответ: 660 км
1085
1)-4а+12а+13а-27а=-6а
2)4.2х-4.9х-6.3х-2.4х=-9.4х
3)-17х+19у-15у+13х=-4х+4у
4)0.9n-0.8m-0.7m+3.5n-1.9n=2.5n-0.1m
<span>6</span>⁷<span>/</span>₁₅<span> - 2</span>³<span>/</span>₁₅<span> = 4</span>⁷⁻³<span>/</span>₁₅<span> = 4</span>⁴<span>/</span>₁₅
<span>
9</span>¹¹<span>/</span>₁₆ <span>+ 4</span>³<span>/</span>₁₆<span> - 2</span>²<span>/</span>₁₆<span> = 13</span>¹⁴<span>/</span>₁₆<span> - 2</span>²<span>/</span>₁₆<span> = 11</span>¹²<span>/</span>₁₆<span> = 11</span>³<span>/</span>₄
<span>
6</span>⁵<span>/</span>₁₄<span> - 2</span>¹¹<span>/</span>₁₄<span> = 5</span>¹⁹<span>/</span>₁₄<span> - 2</span>¹¹<span>/</span>₁₄<span> = 3</span>⁸<span>/</span>₁₄<span> = 3</span>⁴<span>/</span>₇
<span>
19</span>¹¹<span>/</span>₃₅<span> -12</span>²⁹<span>/</span>₃₅<span> = 18</span>⁴⁶<span>/</span>₃₅<span> - 12</span>²⁹<span>/</span>₃₅<span> = 6</span>⁴⁶⁻²⁹<span>/</span>₃₅ = 6¹⁷/₃₅
11часов 15 минут
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