Ответ по предмету Математика: Подскажите откуда взялось 3х

Предмет: Информатика, автор: Аноним

«Шифр Виженера». Это шифр Цезаря с переменной величиной сдвига. Величину сдвига задают ключевым словом. Например, ключевое слово ВАЗА означает следующую последовательность сдвигов букв исходного текста: 31913191 и т. д. Используя в качестве ключевого слова ВАГОН, закодируйте слово ПРАВИЛА.

7 лет назад

Предмет: Английский язык, автор: KaZic

1. Placement test
2. They _________________ in the park when it started to rain heavily.
a. walked
b. were walking
c. were walk
d. are walking
3. ________________ seen fireworks before?
a. Did you ever
b. Are you ever
c. Have you ever
d. Do you ever
4. We’ve been friends ____________________ many years.
a. since
b. from
c. during
d. for
5. You _________________ pay for the tickets. They’re free.
a. have to
b. don’t have
c. don’t need to
d. doesn’t have to
6. Jeff was ill last week and he _________________ go out.
a. needn't
b. can’t
c. mustn’t
d. couldn’t
7. These are the photos ________________ I took on holiday.
a. which
b. who
c. what
d. where
8. We’ll stay at home if it _______________ this afternoon.
a. raining
b. rains
c. will rain
d. rain
9. He doesn’t smoke now, but he __________________ a lot when he was young.
a. has smoked
b. smokes
c. used to smoke
d. was smoked
10. Mark plays football ___________________ anyone else I know.
a. more good than
b. as better as
c. best than
d. better than
11. I promise I __________________ you as soon as I’ve finished this cleaning.
a. will help
b. am helping
c. going to help
d. have helped
12. This town ___________________ by lots of tourists during the summer.
a. visits
b. visited
c. is visiting
d. is visited
13. How about _________________ to the cinema tonight?
a. going
b. go
c. to go
d. for going
14. Excuse me, can you ___________________ me the way to the station, please?
a. give
b. take
c. tell
d. say
15. A lot of ____ came to Ireland in the 1990s.
a. immigrants
b. emigrants
c. invaders
d. colonies
16. There was a nice meal and a band at the wedding ____
a. ceremony
b. reception
c. speech
d. group
17. I mostly ____ my friends via email.
a. get on well with
b. have in commn
c. keep in touch with
d. see each other
18. Bob has had a very interesting ___ . He has had jobs in many countries and industries.
a. carrier
b. job
c. career
d. work
19. She’s very successful. Her ___ has risen a lot in the past few years.
a. money
b. salary
c. job
d. earnings
20. I am very ___ in old cars.
a. keen
b. interesting
c. interested
d. fond
21. He ___ his exam because he didn’t study.
a. failed
b. passed
c. missed
d. fell
22. The house will look cleaner when you have finished the ____.
a. home
b. housewife
c. housework
d. homework
23. Stress is not an illness, but it can ___ to many illnesses.
a. get
b. celebrate
c. contribute
d. affect
24. It’s cold so you should __________________ on a warm jacket.
a. put
b. wear
c. dress
d. take
25. Paul will look ______________ our dogs while we’re on holiday.
a. at
b. for
c. into
d. after
26. She ___________________ a lot of her free time reading.
a. does
b. spends
c. has
d. makes
27. Hello, this is Simon. Could I ___________________ to Jane, please?
a. say
b. tell
c. call
d. speak
28. They’re coming to our house ___________________ Saturday.
a. in
b. at
c. on
d. with
29. I phoned her ____________ I heard the news.
a. minute
b. during
c. by the time
d. the moment
30. I feel very ____________. I’m going to go to bed!
a. nap
b. asleep
c. sleepy
d. sleeper

7 лет назад

Предмет: Информатика, автор: Lakewood1NJ

С++. Даны целые положительные числа n1 и n2 и строки S1 и S2. Получить из этих строк новую строку, содержащую первые n1 символов S1 и последние n2 символов строки S2.

7 лет назад

Предмет: Геометрия, автор: mig99

В треугольнике ABC угол C=90 градусов tgA= √51/7. Найдите косинус внешнего угла при вершине A.

10 лет назад

Предмет: Геометрия, автор: Аноним

помогите пожалуйста докажите что высота ВД треугольника АВС равна 12 см если АВ=13 см ВС=20 см Ас= 21 см

10 лет назад

Подскажите откуда взялось 3х

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