Предмет: Математика, автор: marikabost

СРОЧНО ДАЮ 20Баллов!!! Математика РЕШИТЕ ПЯТОЕ И ЧЕТВЁРТОЕ ЗАДАНИЕ!!!!

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Автор ответа: oregonsmit55

Ответ:

4: -5х. -9а. 26р. 0. 0,3а. д не могу решить тк непонятно со скобкой. n. p-m. -m-k. -16,2n. 0. 5,5. 7b

36720

oregonsmit55: в д -2/8-к

marikabost: А в задаче номер два можете пожалуйста пояснить решение?

oregonsmit55: ну, смотри, берём 68000 за 100% и под ним пишем что х это 40% тем самым находим стоимость после удешевления

oregonsmit55: потом от получившейся суммы ищем 135% аналогично

oregonsmit55: со 2 почти так же

marikabost: Спасибо огромное

marikabost: Но модно пожалуйста подробное объяснение второго???

oregonsmit55: во 2 берём известное количество дней и рабочих кторые должны выполнить работу за х дней и делим на кол-во рабочих которые роют канаву(или что там) за данное кол-во дней

oregonsmit55: (45*24)/32

marikabost: Спасибо

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