Предмет: Геометрия, автор: urvegetable

Помогите, очень срочно

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Автор ответа: logmatmax

1

Ответ:

Объяснение: 1) |CD|=5

2)a) x/-20=5/4 крест на крест умножим 4х=-100,х=-25 б) -20х+20=0, х=-1

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