Предмет: Математика, автор: adik780

Пожалуйста!!!!!Срочно!!!!!

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Автор ответа: arinasmirnowa
1

Пусть боковая сторона=х, тогда  основание=0,4х

2*х+0,4х=48

2,4х=48

х=48:2,4=20 см- длина одной из одинаковых его сторон

2) 20*0,4=8 см- основание данного треугольника

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