Выписаны первые несколько членов геометрической прогрессии: -6; -21; -73,5; ... . Найдите - Дата: 16.02.2020, Автор: caden - №23592747

Выписаны первые несколько членов геометрической прогрессии: -6; -21; -73,5; ... . Найдите её четвёртый член.
- Предмет:
  Алгебра
- Автор:
  caden
- 5 лет назад

Ответы 1

bn=b1*q^n-1q=b2/b1=-21/-6=7/2b4=b1*q^3b4=-6*7/2^3=-6*343/8=-2058/8=-257,25
- Автор:
  jaylahb3sp
- 5 лет назад
- 0
Добавить свой ответ

Еще вопросы

Измените равенства так чтобы у каждого из них было только одно решение. 51*3+2*1*=*08* 4*23+12=*2*5
**3*-25*6=1*44
*52*-*7*8=3*94
- Предмет:
  Математика
- Автор:
  catherinemason
- 5 лет назад
- Ответов:
  
  1
- Смотреть
2.4.
Write the following questions in reported speech.
1. I said to Boris, "Does your friend live in Lon¬don?" 2. I said to the man, "Are you living in a ho¬tel?" 3. Nick said to his friend, "Will you stay at the Hilton?" 4. He said to me, "Do you often go to see your friends?" 5. She said to me, "Have you sent them a telegram?" 6. She said to me, "Did you send them a telegram yesterday?" 7. I said to her, "Can you give me their address?" 8. I said to my mother, "Did anybody come to see me?" 9. Oleg said to me, "Will you come here tomorrow?" 10. He said to us, "Did you go to the museum this morning?"

2.5.
Write the following questions in reported speech.
1. I said to Nick, "Where are you going?" 2. I said to him, "How long will it take you to get there?" 3. He said to her, "Where do you usually spend your summer holidays?" 4. Ann said to Mike, "When did you leave London?" 5. Boris said to them, "How can I get to the railway station?" 6. Mary asked Tom, "What time will you come here tomor¬row?" 7. She asked me, "Why didn't you come here yesterday?" 8. They said to him, "What time does the train start?" 9. Mother said to me, "Who has brought this par¬cel?" 10. I said to Becky, "What kind of book has your friend brought you?"

2.6.
Write the sentences in reported speech.
1. She asked me: “Don’t close the window.” 2. They said to us: “Come at five o’clock tomorrow.” 3. The doctor advised to him: “You must spend your holidays in the south.” 4. My friend suggested to me: “I can bring you this book.” 5. Andy said: “I prefer CD books.” 6. Julia told: “We met Pete in the library yesterday.” 7. Jane wondered: “Who are you waiting here?” 8. Kate wanted to know: “Have you ever traveled abroad?” 9. Father said to us: “I’ll arrange everything for the trip next week.” 10. The boy told his mother: “I have been learning this poem for half an hour.”
- Предмет:
  Английский язык
- Автор:
  gingersnap17hh
- 5 лет назад
- Ответов:
  
  1
- Смотреть
сколько в часах будет 108 минут? Помогите пж!
- Предмет:
  Математика
- Автор:
  brunopowell
- 5 лет назад
- Ответов:
  
  2
- Смотреть
4 целых 1/3 - х = -3 целых 1/6 Помогите очень прошу
- Предмет:
  Математика
- Автор:
  malik211
- 5 лет назад
- Ответов:
  
  5
- Смотреть

How much to ban the user?

1 hour 1 day 100 years