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Из двух городов, расстояние между которыми 1.200 км, вышли одновременно навстречу друг другу два поезда. Один из них проходит это расстояние за 20ч, другой - за 30ч. Через сколько часов поезда встретятся?
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Предмет:
Математика -
Автор:
romanyndz - 5 лет назад
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Ответы 2
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Найдем скорости поездов:1 поезд: 1200/20 = 60 км/ч2 поезд: 1200/30 = 40км/ч.Найдем скорость сближения:60+40 = 100 км/ч1200/100 = 12 часовОтвет: 12 часов
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Автор:
alipio - 5 лет назад
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0
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1200 : 20 = 60 км/ч скорость 1-го1200 : 30 = 40 км/ч скорость 2-го60 + 40 = 100 км/ч скорость сближения 1200 : 100 = 12 ч встретятся
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Автор:
myron5uvr - 5 лет назад
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0
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Learning foreign languages
Jessica is a second-year student. She studies Law at Moscow University. She has always dreamed of becoming a lawyer as she thinks that to stand for people’s rights is the most rewarding and socially needed occupations in the world. Jessica specializes in International law.
Foreign languages play a very important role in her life. She already knows English quite well as she went to an English school, But she realizes that it’s not enough for an international career. She does everything to get as much practice in it as possible. Every summer she goes to London on her vacations. She has several friends there with whom she chats on the Internet living in Moscow. She plans to participate in a student exchange program next autumn. Jessica also attends English clubs in the centre of Moscow where she meets interesting people to speak to.
Last year she began studying Italian. She learns it for pleasure. Jessica finds in the most beautiful and charming language in the world. She adores Italian songs and knows many of the by heart. Her level is not very high still but it rises gradually. She finds Italian pronunciation easy and grammar logical. Next spring Jessica wants to visit Milan. She knows sense in fashion and appreciates designer clothes. She is also looking forward to going to Italy because she is attracted by its rich and original culture. She has many interests and hobbies but she manages to combine them with studies. Her university is the most important thing for her at this period of life.
1. What does Jessica do in London every summer?
2. What plans does Jessica have?
3. How does Jessica communicate with her English friends?
4. How does Jessica find Italian?
5. Why has Jessica dreamed of becoming a lawyer?
6. How does Jessica practice English?
7. Where did Jessica learn English before?
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