Предмет: Алгебра, автор: villi99

дана геометрическая прогрессия -2;-8 найти: B4-?

Ответы

Автор ответа: m11m

В₁=-2
В₂=-8
В₄-?

q=B₂=-8 =4
B₁ -2
B₄=B₁*q³=-2*4³=-2*64=-128
Ответ: В₄=-128.

Предыдущий вопрос

Следующий вопрос

Интересные вопросы

Предмет: Русский язык, автор: slender131

составить 1 предложение со словом учитель вопр

2 года назад

Предмет: Литература, автор: narzievfarxodoxkexg

Даю 150 баллов! Средства художественной выразительность в произведениях Брюсова "Юному поэту","Сонет к форме","Грядущие гунны".Хотя бы первые 2 стиха.Желательно все)

2 года назад

Предмет: Русский язык, автор: Сашенька1Садыкова13

Сочинение на тему осень по плану: 1. Незаметно подкралась осень. 2. Изменения в природе. 3. Яркая рябина. 4. Осенний дождь и туман.
Немного предложений

Помогите пожалуйста)))

2 года назад

Предмет: Английский язык, автор: egorrrrr28

Помогите с самостоятельной работой

READING

Harry Bolton didn’t really like sport at all until he discovered something both new and unusual. “I was listening to the radio one day when I heard something that I thought must have been a joke. The DJ was talking about underwater hockey! When I realized it actually was a sport, I decided to find out more about it. To my surprise, I found a local team and before I knew it, I was part of it!”

Unlike water polo, where the action takes place above the water, underwater hockey is played at the bottom of the pool. Players wear masks, flippers and snorkels during the game. “The rulers are simple, you just have to slide the puck into the opposing team’s goal,” says Harry.

Underwater hockey was invented by a British diving club in 1954. Harry told us, “Unfortunately it’s not much of a spectator sport, as all people watching from outside the pool can see are lots of splashing and flippers!”

True or False?

1. Harry Bolton played ice hokey before………..

2. Underwater hockey is like water polo………..

3.Underwater hockey was invented in Canada……

4. According to Harry the rulers are not difficult……

5. You need some equipment such as masks, flippers and snorkels…….

Choose the right variant.

6. Tony’s …… He doesn’t feel comfortable with people.

a. easy-going b. sociable c. shy

7. Dave is …….He must go on a diet.

a. fit b. overweight c. responsible

8. I ……breakfast right now. Can you call a little later?

a. cook b. am cooking c. have cooked

9. Maria is good at languages. She ….. French, Spanish and German.

a. speaks b. is speaking c. has spoken

Fill in the missing preposition using with the phrasal verbs

It’s a formal party. You really should put …a tie.
Please put me …. to Dr. Green.
I can’t put … that kind of behavior any longer.
6. How long can camels go… water?
11. This tie goes….. …. your shirt very well.
12. People can go….water for about three days.
Complete the sentences using Past Simple or Past Continuous, Present Perfect , Present Simple

16. I ….already …….my homework. ( do)

17. I …….this book last year. (read)

18. We …….never …….to Washington. (be)

19.Tom ……computer games at five o’clock yesterday. (play)

20. I…….the dog for a walk every day after school. (take)

Rewrite the sentences using the Passive Voice.

21. Students use computers at their lessons.

22. The teacher explained the rules of the game to the students.

23. They will clean the office tomorrow.

24. John Napier designed the costumes for Cats.

25

7 лет назад

Предмет: Физика, автор: Diana5D

Санки равномерно поднимают по гладкому склону длиной 5 м на высоту 3 м, прикладывая силу 300Н, направленную вдоль склона. Чему равна масса санок? (трением пренебречь)

P.S. Как пренебрежение трением изменит что-то в решении? Можно ли записать длину как S?

7 лет назад