Предмет: Математика, автор: оля1664

вырази величины в указанных единицах 2ч 19 мин= с

Ответы

Автор ответа: Татьяна18209030

8340секунд
Т.к. 2часа= 120минут=7200секунд
19минут=1140секунд
7200+1140=8340

Автор ответа: лера1205

1мин=60сек
2часа=120мин
120х60=7200
плюс еще остались 19мин
получается 19х60=1320
ответ;7200+1320=8520сек

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