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дан вектор а=(3;-2;7) найдите координаты вектора -3а
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Предмет:
Математика -
Автор:
ferrer - 5 лет назад
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Ответы 2
Еще вопросы
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Прочитай текст. Определи, какие из утверждений соответствуют содержанию текста (1- true), какие не соответствуют (2-false) и о чем в тексте не сказано, то есть на основании текста нельзя дать ни положительного, ни отрицательного ответа (3- not stated).
Oxford
The city of Oxford is like London. It is old and it is situated on the river Thames.
Oxford is a beautiful and a very green city. Green fields and parks surround it. Green gardens with a lot of flowers and trees surround the colleges. The river Thames is situated quite near the city.
Oxford has existed since 912. The university was founded in 1249. Today it consists of 35 independent colleges and five “halls”. Every year more than one thousand students from different countries enter Oxford University. The entrance exams are difficult. It is necessary to work hard to become a student of Oxford. The students have to pay for their studies.
The academic year in England has three terms which usually last from the beginning of October to the middle of December, from the middle of January to the end of March and from the middle of April to the end of June.
Examinations take place at the end of each term. If student fails in an exam, he may be allowed to take it again. Only two reexaminations are usually allowed.
The University of Oxford has a tutorial system of education: every student has a tutor who plans his work. Each week some students come to see him, they discuss different questions connected with their studies, they tell their tutor about the work they have done.
The students of Oxford spend their morning hours working. They have lectures and seminars, or they study in the rooms. At two they have a dinner break which lasts till four. After tea they continue their studies.
The life of the students at Oxford is interesting. The University has many societies and clubs, enough for every interest. Almost all students go in for some kind of sport.
1. If a student fails in an exam he is allowed to take it, but only twice.
Выберите один ответ:
a. false
b. true
2. To become a student of Oxford it is necessary to pass difficult entrance exams.
Выберите один ответ:
a. false
b. true
c. not stated
3. Oxford is older than London.
Выберите один ответ:
a. not stated
b. false
c. true-
Предмет:
Английский язык -
Автор:
oliveouwo - 5 лет назад
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Ответов:
5 -
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Двом оператораи було доручено набрати на комп'ютері рукопис. перший оператор набрав 3/7 усього рукопису, а другий за той самий час - 5/14 усього рукопису. Скільки сторінок в рукописі, якщо перший оператор набрав на 7 сторінок більше, ніж другого?
Пж ,помогите!-
Предмет:
Математика -
Автор:
harmonyfrazier - 5 лет назад
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Ответов:
1 -
Смотреть
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Используя алгебраический метод построить отрезки
[tex]y = \sqrt{4 {a}^{2} + 5ab + 4 {b}^{2} } [/tex]
[tex]y = \sqrt{ \frac{3}{2} } \times a[/tex]
[tex]y = \frac{ {a}^{2} + {b}^{2} }{a + b} [/tex]
[tex]y = \sqrt{ {abc}^{2} } [/tex]
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Предмет:
Математика -
Автор:
lillys64m - 5 лет назад
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Ответов:
0 -
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Найти наибольшее и наименьшее число каждой переменной, для которых выполняется равенство (x^2+y^2+z^2)^2=a^2*(x^2+y^2-z^2) (a>0)
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Предмет:
Математика -
Автор:
tyharvey - 5 лет назад
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Ответов:
0 -
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