Предмет: Математика, автор: 00Milaniya00

решите пропорции:
3,5/0,4=10,05/х

-4/2,5х=0,8/12,5

Ответы

Автор ответа: isom

0

Ответ:

3,5/0,4 = 10,05/х

3,5х = 10,05 * 0,4

3,5х = 4,02

х = 4,02:3,5

х = 1,148≈1,1

-4/2,5х = 0,8/12,5

-2,5х*0,8 = 4*12,5

-2х = 50

х = -25

Пошаговое объяснение:

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