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Отец ловит рыбу в специальном резервуаре ща 20 мин. Если известно что он делает это В 4 раза быстрее чем его сын, то за какое время они сделали бы эту работу вместе
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Предмет:
Математика -
Автор:
dud - 5 лет назад
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Ответы 1
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Решение:20/4=5 мин 20-5=15 минОтвет: они сделают эту работу за 15 мин
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Автор:
daxwqf4 - 5 лет назад
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Каждое логическое выражение A и B зависит от одного и того же набора из 7 переменных. В таблицах истинности каждого из этих выражений в столбце значений стоит ровно по 4 единицы. Каково максимально возможное число единиц в столбце значений таблицы истинности выражения A + B? (А ИЛИ В).
Готовлюсь к егэ. столкнулся с таким типом задач. Я не понял, что от меня вообще хотят. Объясните как можно подробнее, а не только дать способ решения. Я должен решать не по схеме, а по логике. Помогите, пожалуйста.-
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выподни действия наиболее простым способом использую свойста вычитания (357+289)-157. (863+471)-371. 643-(243+398). 876-(398+476).
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