giúp với

3,tìm các số tự nhiên có 3 chữ số thỏa mãn: Khi viết tiếp số đó vào bên phải số 679 thì đc số mới là số có 6 chữ số chia hết cho các số 5,6,7,9

helpppp

tính n biết số đường thẳng kẻ được bằng 465

giúp với , làm đc cho 1 like

2,chứng minh rằng (n+2019^2020)*(n+2020^2020) chia hết cho 2 với mọi số tự nhiên n

3,tìm các số tự nhiên có 3 chữ số thỏa mãn: Khi viết tiếp số đó vào bên phải số 679 thì đc số mới là số có 6 chữ số chia hết cho các số 5,6,7,9

có bao nhiêu số tự nhiên gồm 4 chữ số có tính chất sau:số đó chia hết cho 11 và có tổng các chữ số của nó cũng chia hết cho 11

giúp mình với các bạ thân yêu!

In each exercise put a suitable word in each blank space.

1. He reached there _____ four o'clock _____ the afternoon _____ Monday.

2. _____ Tuesday I must be there _____ six o'clock _____ the evening.

3. I stopped _____ his house for a little while _____ the middle _____ a storm ____ Sunday.

4. _____ my opinion you can rely _____ him to come _____ noon.

5. I saw him looking _____ some books __in___ the library __on___ Saturday. His brother was _____ him.

6. I posted the parcel _____ the main Post Office _____ Market Road _on____ Tuesday.

7. It won't fall _____ because I have twisted the wire _____ that post to keep it _____ position.

8. ____ Sunday I was woken up ____ the sound of the radio ____ my brother's room. It was ____ much too loudly.

9. He was injured _____ the left arm _____ the accident.

10. I was surprised _____ the way _____ which he acted.

11. The lorry was moving _____ full speed when the load fell _____

12. We reached the city _____ about ten o'clock _____ the morning.

13. We parked our car _____ the side _____ the road.

14. There is plenty _____ tin left _____ that mine.

15. We threw the net _____ the river and sat _____ to wait.

16. There is a waterfall farther _____ the river. You can see the foam floating down _____ us.

17. Sunday is the day _____ which he goes _____ church.

18. _____ most Saturdays I go fishing _____ my brother.

19. My friend used to go to school _____ his bicycle but now he comes _____ bus or _____ taxi because he lives farther _____.

20. Some of the boxes _____ the lorry were not tied _____ firmly.

21. Sometimes I read _____ my room _____ the evening.

22. _____ the last two weeks I have spent most of my spare time _____ my hobby which is stamp-collecting.

23. You can catch plenty _____ fish _____ this method.

24. The passengers _____ the taxi were worried _____ the speed.

25. I'll see you next Sunday, that is _____ the fifth of May.

26. He turned _____ the radio and tuned _____ to BBC.

27. Some of us will be going _____ bus and some _____ our bicycles.

28. I visited my friend _____ whom I had made an appointment.

29. We arrived _____ the place _____ which we had come _____ the previous picnic.

30. I listened _____ some music _____ the radio.

31. I accompanied my uncle _____ a hunting trip _____ the jungle.

32. We camped _____ that island _____ two days.

33. When I went _____ a walk early _____ the morning, the breeze blew _____ my face.

34. We put the luggage _____ the back of the car and then set _____ _____ our journey.

35. We went to a party _____ which we enjoyed ourselves.

36. I took some photographs _____ my camera.

37. The lorry knocked _____ the back of our bus ______ accident.

38. He is interested _____ sport so when he reads the newspaper he does not bother _____ the local news except _____ the results _____football and hockey matches.

39. I called _____ Ali's house yesterday to see if he had recovered _____ his illness. He was still suffering _____ stomach-ache.

40. We ate our food _____ a shady spot and then packed everything _____ so that we were ready _____ go home.

giúp mình với

I. Fill in each blank with the correct preposition.

1. I love to go shopping (in, on, at) Christmas time.

2. I live in the US (in, on, at) the 1980s.

3. I'll see you (at, in, on) a few weeks.

4. We like going to the movies (in, on, at) the evening.

5. He lives (in, to, at, x) New York.

6. She went (in, to, at, x) home.

7. I work (in, to, at, x) Seattle.

8. He went (in, at, to, x) his friend's house.

9. She arrived (in, at, to, x) London for the celebrations.

10. I am going to stay (in, at, to, x) home this weekend.

11. He works (in, at, to, x) the hospital.

12. I am going to see John (in, at, to, x) Florida this summer.

13. I arrived (in, at, to, x) work early this morning.

14. She came (in, at, to, x) home early.

15. We stayed (in, at, to, x) the grand Hotel.

16. They visited (in, at, to, x) Italy last summer.

17. She is going to travel (in, at, to, x) Greece this summer.

18. I will be (in, at, to, x) school later today.

19. He has been working (for, while, during) three weeks.

20. I fell asleep (during, for, while) the film.

21. Did you see Tom (for, while, during) your vacation?

22. We talked (for, while, during) an hour.

23. She watched TV (for, while, during) I cooked.

24. (For, While, During) our stay in London, we visited a lot of museums.

25. What did you do (for, while, during) you were in London.

26. I think I need to study French (for, while, during) a few months before I go there.

27. I came up with a great idea (for, while, during) I was thinking about my class.

28. They drove through the countryside (for, while, during) they were staying in France.

29. He was out of work (for, while, during) 6 months before he found a new job.

30. I broke my arm (for, while, during) I was playing squash.

31. Please, don't interrupt the teacher (for, while, during) she is speaking.

32. He broke into tears (for, while, during) the film.

33. Could you hold on (for, while, during) a few months?

34. I am just hopeless (about, at, by, for, from) playing the guitar.

35. She is furious (about, at, by, for, from) her son's grades in school.

36. I am upset (about, at, by, for, from) my health.

37. She was annoyed with tom (about, at, by, for, from) ignoring their agreement.

38. He gave her a cheek (for, in, of, to, with) a lot of money. for

39. The reason (for, in, of, to, with) this meeting is to discuss the merger. for

40. The decrease (for, in, of, to, with) profits is due to the bad market. In

41. There is a real demand (for, in, of, to, with) new products. for

42. We have seen a fall (for, in, of, to, with) prices recently. in

43. The cause (for, in, of, to, with) his problems is his family. of

44. Did you do any damage (for, in, of, to, with) the house? to

45. The difference (for, in, of, to, with, between) the two is very slight.

46. Are you doing anything special (in, on, at) New Year.

47. The plane is due to arrive (in, on, at) 19. 25.

48. Work is always more stress full (in, on, at) the end of the month.

49. We saw a ballet (in, on, at) Julia's birthday.

50. I was very tired (after, on, in, at) my trip to England.

ai làm đúng mình tích hết luôn

Bài 3.Tính giá trị biểu thức

a,M=m^2(m^2 -n)*(m^3-n^6)*(m+n^2)với m=-16,n=-4

b,= -34x+34y biết x-y=-1

c, ax-ay+bx-by biết a+b=-7 và x-y=-1

Bài 4.Tìn n biết

a,3 chia hết n+5

b,-3n +2 chia hết 2n+1

Bài 5*.Tìm các số nguyên x và y sao cho:

a, (x+2) (y-1)=3

b,(3-x0) (xy+5)=-1

(10²+11²+12²)chia(13²+14²)

tính nhanh nha

có lời giải

ko biết các bạn có làm được ko

chuyển các câu sau sang thể bị động: với công thức đã cho ở bị động

s+filled,coated,coved,bored+with+o

1. Money interests him more than anything else.

2. Politics bores her quickly.

3.The closure of the plant is worrying all the workers

4. The performance of the tigers excited the boys.

5. We covered the tables with cloth.

6. The results of the exams upset me a lot.

7. The long journey tired him.

8. Eating the same food everyday tires us.