Предмет: Математика, автор: nattamari

треба розпиляти 3 колоди на 4 частини кожну.Скільки часу на це потрібно, якщо на один розпил витрачають 2 хвилини

Ответы

Автор ответа: Lirra

Щоб розпиляти одну колоду на чотири частини потрібно зробити три розпили. Отже, для троьх колод в сумі знадобиться 9 розпилів.
9*2=18 хвилин.

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Оʻzbek tili, автор: ariannagrande20

ёрдам беринглар чорак учун

5 лет назад

Предмет: Алгебра, автор: Gayana260586

Помогите пожалуйста решить

5 лет назад

Предмет: Английский язык, автор: aminabazenova565

помогите плиз, срочно)
In each of the following, select ONE correct answer.

1. Does anybody know _______ on the ground?

A) how long this plane will be

B) how long will be this plane

C) how long will this plane be

D) that how long this plane will be

2. "This restaurant is very expensive!"

"It is, but order _______ want. This is a very special occasion."

A) what is it you B) what do you C) whatever you D) whatever yo did

3. "What did your grammar teacher want to talk to you about?"

"I did badly on the last test. She _______ study for it."

A) said why didn't I

B) asked why didn't I

C) said why I didn't

D) asked why I didn't

4. "Why are you staring out of the window? What _______ about?"

A) you are thinking B) you think C) are you thinking D) do you think

5. "I can't decide what colour I want for my bedroom. What do you think?"

"You should choose _______ colour you want. You're the one who will have to live with it."

A) whichever that B) whatever C) however D) that what

6. "Did you remember to tell Mark _______ he should bring to the meeting tomorrow.

A) that B) what C) if D) that what

7. "My aunt has been feeling bad since Uncle George died. Is it because she's depressed?

"I think so. _______ can cause debilitating physical symptoms is a medical fact."

A) Depression

B) That depression it

C) That depression

D) It is that depression
8. There was an earthquake on the coast yesterday. Fortunately, there was no loss of life.

However, because of the danger of collapsing sea walls, it was essential that the area _______

evacuated quickly.

A) to be B) will be C) be D) is

9. "This cake is terrible. What happened?"

"It's my grandmother's recipe, but she forgot to tell me how long _______ it."

A) did I bake B) should I bake C) do I bake D) to bake

10. "Let's go to Riverton this weekend."

"Sounds like fun. _______ from here?"

A) How far is it B) How far it is C) It how far is D) How far is

11. Edward's interview was very intense. The interviewer wanted to know many facts about his

personal life, and even asked him _______ had ever used any illegal drugs of any kind.

A) that if he B) that he C) if or not he D) wheter or not he

12. It's hoped that all present-day communicable diseases will be conquered. However, _______

about certain diseases is still not sufficient to prevent them from spreading easily among the

population.

A) what we know B) what do we know C) what we know that D) that we know that

13. "Why didn't Henry attend the meeting this morning?"

"He's been sick. His doctor insisted that he _______ in bed this week."

A) will stay B) stayed C) stays D) stay

14. Nobody yet knew what _______ to cause the dam to burst, but the residents of the area

organized quickly to save life and property against the rising floods.

A) was she B) am I C) happened D) did it happen

15. Tom walked into the huge hall to register for classes. At first, he simply looked around and

wondered what _______ supposed to do.

A) was she B) am I C) he was D) I am

5 лет назад

Предмет: Математика, автор: skazka201286

решить неравенство
y-25>39

решить уравнение до конца с проверкой

9 лет назад

Предмет: Химия, автор: vikxaker

Срочно нужна помощь
обчислити об'єм кисню який необхідно використаті для спалювання 120 млг суміші мєтану і бутану об'ємна частка бутану в суміші 80%

9 лет назад