Предмет: Математика, автор: minkinalika

Помсрочно помогите пожалуйста огите пожалуйста

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Ответы

Автор ответа: gog41586
0

Відповідь:

80 тхв = 1 год 20 хв.

Покрокове пояснення:

1)

1 дистанція -  1 год 20 хв = 80 хв.

2 дистанція - 1 год 25 хв = 85 хв.

3 дистанція - 1 год 15 хв = 75 хв.

2)

80 + 85 + 75 / 3 = 80 (хв) = 1 год 20 хв - витрачав в середньому спортсмен на одну дистанцію.

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Exercise 7.
Choose the correct word.

1. We heard the Executive Board ______ in the conference hall.
a. discussing​​​b. to discuss

2. Abigail saw her brother ______ upstairs.
a. go​​​​​b. to go

3. My mother didn’t notice ______ the door and ______ .
a. me open, go​​​b. I opened, went

4. We saw a man ______ the way to the Sloan Square underground station.
a. showing​​​​b. showed

5. Have you ever heard her ______ a lie?
a. tell​​​​​b. has told

6. After the sunset the tourists felt the temperature ______ to fall.
a. begin​​​​​b. began

7. When Grace was getting on the train she felt somebody ______ her by the shoulder.
a. touch​​​​​b. touched

8. The children watched the road ______ .
a. being repaired​​​b. repairing

9. Suddenly Bella heard a familiar voice ______ her name.
a. call​​​​​b. had called


10. The stranger stood on the platform and watched the train _____ .
a. going away​​​​b. go away

11. I have heard ______ for a week now.
a. him being ill​​​​b. that he has been ill

12. ______ her knock at the door?
a. did you hear​​​​b. have you heard

13. ______ Mr. Cox has bought a new house?
a. did you hear​​​​b. have you heard

14. I noticed ______ to discuss that confusing situation.
a. my friend not to want​​b. that my friend didn‘t want

15. She has often seen an old man ______ along the beach with a dog.
a. walking​​​​​b. walked

16. I hear ______ the meeting of Assets and Liabilities Committee till Monday.
a. they have put off​​​b. them put off

17. We watched the children ______ swans in St. James’s Park.
a. feeding​​​​​b. feed

18. As soon as the squadron approached the forest they smelled something ______ .
a. was burning​​​​b. burning

19. The teacher saw that the students ______ his explanation.
a. not understand​​​b. didn’t understand

20. Mr. Worchester looked at Becky and felt ______ him.
a. that she believed​​​b. her believe


Exercise 8
Choose the correct word.

1. The hijackers made the hostages ______ in the plane all night.
a. to stay​​​​b. stay

2. The HR manager had his secretary ______ the letters in time.
a. send​​​​b. sent

3. The local authorities made the tenants ______ the house because it was dangerous to live in it.
a. leave​​​​b. leaving

4. Mother let the children ______ till late.
a. stay out​​​​b. have stayed out

5. Suddenly the child let her hand ______ and ran away.
a. go​​​​​b. went

6. Yesterday I couldn’t get my car ______ and had to go by bus.
a. start​​​​b. to start

7. Mother wanted her children ______ their homework first.
a. to do​​​​b. did

8. The police asked the witnesses of the accident ______ evidence.
a. give​​​​b. to give

9. The scientists consider this method ______ very effective.
a. to be​​​​b. be

10. The Clarks didn’t expect their son ______ architecture.
a. to study​​​​b. to have studied

11. The young woman asked the porter ______ her suitcases to the taxi.
a. to take​​​​b. took
12. Mr. Cutter wanted his daughter ______ to University.
a. to go​​​​b. went

13. Everybody in the city knew him ______ the best general practitioner.
a. was​​​​b. to be

14. I’m sure your boss would like you ______ now.
a. to be working​​​b. to have worked

15. I consider your students ______ this work long ago.
a. to have done​​​b. to do

16. Priscilla wanted ______ to break the news to her mother.
a. herself​​​​b. her

17. He knew ______ to be treated unfairly in the company.
a. himself​​​​b. him

18. Willie supposes his friends ______ him in any predicament.
a. to help​​​​b. help

19. My friend advised me ______ that business.
a. not to get into​​​b. didn’t get into

20. Anselm hated this question ______ with somebody else.
a. to be discussed​​b. had been discussed
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