Предмет: Математика, автор: 5742

выписано несколько последовательных членов геометрической прогрессии:...;20;x;5;-2,5;...найдите член прогрессии ,обозначенной буквой x

Ответы

Автор ответа: petr3

3

1) 5:(-2,5)=-2
2) 20:(-2)=-10

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