Предмет: Геометрия, автор: danadanatswas

ПОМОГИТЕ ПРОШУ!!!ПОЖАЛУЙСТА​

Приложения:
Аноним: 2/6=5/ВС; ВС=6*5/2=15
danadanatswas: спасибо!!
danadanatswas: ответь пожалуйста на еще один вопрос, там 25 баллов

Ответы

Автор ответа: Аноним
0

Ответ:

ВС=15

Объяснение:

∆АDE~∆BAC, по первому признаку.

АВ=DA+DB=2x+4x=6x

AD/AB=DE/BC

2x/6x=5/BC

BC=6x*5/2x=30x/2x=15ед

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