Предмет: Математика, автор: 345345000

Помогите пожалуйста сделать 2 и 5.
Даю 45 баллов
Срочно пожалуйста. Умоляю

Приложения:

Ответы

Автор ответа: RashYTISO
0

Ответ:82737

Пошаговое объяснение:


345345000: ребят помогите пожалуйста
Автор ответа: marthalins
1

2)  

Дано:

ABCD — трапеция

BC II AD

BC=5 см

BM=7 см

AB=14 см

______________

AD — ?

Решение:

△AMD и △BMC

⦟M=общий

⦟MAD=⦟MBC

△AMD ~ △BMC

из подобия следует:

AM/BM=AD/BC;

AD=AM*BC/BM=(AB+BM)*BC/BM

AD=(14+7)*5/7=105/7=15 см


345345000: помогите пожалуйста 5 и 4
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