Предмет: Математика, автор: blagova10

Помогите решить только не через х

Приложения:

nestyme: а почему ты не хочешь через х?
blagova10: Нам не разрешают решать через х

Ответы

Автор ответа: маря1мариха
0
если не через х, то методом перебора
1-2
2-1
3-4
1+2+4=7
ответ:1 сторона 2, 2 сторона 1, третья сторона 4
Автор ответа: nestyme
1
Раз через х нельзя, то остается использовать отношение - стороны делятся в отношении 1:2:4(то есть сначала идет самая маленькая сторона, в два раза меньшая средней, далее - средняя, и затем - самая большая, вдвое большая средней или в 4 раза большая самой маленькой).
Так как периметр это сумма длин всех сторон, то самая маленькая сторона составляет  \frac{1}{1+2+4} = \frac{1}{7} от периметра - то есть она равна 1. Тогда другая сторона,средняя, вдвое больше и равна 2. И, наконец, наибольшая сторона равна 4.(вдвое больше средней).
либо перебор, но это, намой взгляд, будет не очень верно.
Ответ:1,2,4
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