Предмет: Алгебра, автор: серый654321

Известен 1-й член и разность арифметической прогрессии (Dn) D1 =-20 . B=3.15 НАЙТИ D18

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Автор ответа: ЮнДжонханОппа

0

D18= -20+3,15(18-1)=-20+3,15•17= -20+53,55= 33,55

Автор ответа: серый654321

0

это точно

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