Предмет: Математика, автор: Аноним

Помогите,пожалуйста
10 класс очень нужно

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Автор ответа: irishkax1
0
В 4 номере первый пример что-то не так с условием ( на мой взгляд). Если еще кто-то пришлет решение, то напиши мне, пожалуйста. 
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Автор ответа: Аноним
0
3) 2 понять не могу,что написано
Автор ответа: Аноним
0
разобралась,спасибо)
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