Предмет: Математика, автор: asd456asd

1)От посёлка до города катер шёл 3 часа со скоростью 30 км/ч. Моторная лодка отошла от посёлка на час раньше катера,а пришла в город на час позже катера.Какова скорость моторной лодки? 2)Два автомобиля ехали навстречу друг другу с одинаковой скоростью.Первый автомобиль проехал до встречи 180 км за 3 часа,а второй двигался 6 часов.Какое расстояние до встречи про ехал второй автомобиль? решить действиями с пояснением пожалуйста!

Ответы

Автор ответа: AlexDID

1)24-7=17ч-время в пути
.2)510:17=30км/ч-скорость сближения.
3)30-19=11км/ч-скорость лодки.

1)17-2=15ч-за 2 часа до встречи.
2)30*15=450км-проехали вместе за 15 часов.
3)510-450=60км-было между ними за 2 часа до встречи

Автор ответа: rogudeevkolya

спс за ответы к задачам

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Биология, автор: Аноним

помогите пожалуйста

6 лет назад

Предмет: Английский язык, автор: ustyuzhaninak13

Помоги пожалуйста, срочно надо,даю 50 б
1. (Eat)___________sea food is healthy for you. * To eat Eating Eat 2. I can't stand (eat)___________ garlic. * to eat eating eat 3. Sue prefers (order)__________ lamb chops. * ordering to order order 4. Dad wants (buy)_______ some meat for steak for dinner. * buying to buy buy 5. I look forward to (try) ________these apple pies. * to try trying try 6.Kate suggested (order)_________ pizza for everybody. * to order order ordering 7. I would prefer (have)_________ chicken with rice. * to have haveing having have 8. Do you deny (steal) _______________ the money? Yes or no? * stealing to steal steal 9. I refuse (accept) _________ that there's no other way out. * accepting accept to accept 10. The kids hate (eat) __________cereal. * eating eat to eat 11. It is worth (visit)________ the Tower of London. * to visit visit visiting 12. What would you like (do)_______now? * doing to do do 13. My brother enjoys (read)__________ detective stories. * to read reading read 14. They have run out of petrol and have to stop (buy)______________ some. * to buy buy buying 15. I've just finished (read) ___________ the novel. * reading read to read 16. This medicine didn't help. Try (take) ________ an aspirin. * taking to take take takeing 17. I would love (have) ______________ a mixed salad, please. * to have having have 18. Our dog can`t stand (be)__________ walked on a lead. * to be being be 19. Many graduates have difficulty in (find)____________ jobs. * to find finding find 20. How about (visit)___________ this exhibition? * to visit visit visiting 21. Always remember (turn) __________off the gas when you go out. * turning to turn 22. He will always remember (act) __________ on the stage for the first time. * to act acting 23. It was brave of you (tell)____________ the truth! * telling to tell 24. We have enough money (travel)_____________ around the world. * travel to travel travelling 25. A year ago he stopped ( smoke) _____________ and hasn't smoked ever since. * smoking to smoke smokeing smoke 26. I would rather (go)_____________ to the cinema. * to go go

6 лет назад

Предмет: Другие предметы, автор: adik675