K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

4 tháng 7

(-7\(x^2\).2y\(^4\).z\(^3\)) + 20\(x^2\).y\(^4\).z\(^3\)

= (-7 + 20)\(x^2y^4z^3\)

= 13\(x^2y^4z^3\)

4 tháng 7

Vế trước là "In spite of her age" ạ

4 tháng 7

I spite of her age she runs four kilometers every Monday morning.
\(\rarr\) Through sheer determination, she runs four kilometers every Monday morning in spite of her age.

MT
6 tháng 7

Bước 1: Tại cửa sổ phần mềm soạn thảo văn bản với tệp văn bản đang mở, thực hiện chọn nội dung cần sao chép, sau đó thực hiện lệnh Copy.

Bước 2: Chuyển sang cửa sổ phần mềm trình chiếu, nháy chuột vào nơi muốn văn bản xuất hiện, sau đó thực hiện lệnh Paste.

MT
6 tháng 7

Nháy chuột vào nút lệnh Sort sa trong nhóm lệnh Sort & Filter.

Chọn thẻ Data.

Chọn OK.

Chọn một ô trong cột cần sắp xếp dữ liệu.

Thêm mức sắp xếp, lựa chọn cột, tiêu chí và cách sắp xếp trong hộp thoại Sort.

MT
6 tháng 7

- lợi ích của việc sắp xếp dữ liệu : để danh sách dữ liệu có thứ tự, dễ nhìn và tính toán. 

VD : Sắp xếp điểm trung bình của các bạn trong lớp theo kiểu giảm dần ( để xem ai hạng 1,2,3... ) 

- lợi ích của việc lọc dữ liệu : dễ tìm kiếm dữ liệu, dễ tính toán và làm bảng tính đẹp mắt hơn. 

MT
6 tháng 7

=> -Sắp xếp dữ liệu là hoán đổi vị trí các hàng để giá trị dữ liệu trong 1 hay nhiều cột được sắp xếp theo thứ tụ tăng dần hay giảm dần.

      -Lọc dữ liệu là chọn và chỉ hiển thị các hàng thỏa mãn các tiêu chuẩn nhất định nào đó.

DH
Đỗ Hoàn
CTVHS VIP
3 tháng 7

our school life is pretty busy, but it's really rewarding. We have lessons in lots of subjects, and we often give presentations to our classmates. We also go on school trips quite a bit, which is a great way to learn outside the classroom. Many of us take part in after-school activities too, like sports or clubs. Of course, we sit exams to show what we've learned, and we always do homework to practice our skills

Mấy chỗ in đạm là mình đánh dấu từ nha

I have ever told you he ________ unreliable.A. is B. were C. had been D. would beI told him ______ the word to Jane somehow that I ________ reach her during the early hours.A. passing will try B. will pass tried C. to pass would try D. he passed busyLaura said she worked on the assignment since ________.A. yesterday B. two day’s ago C. the day before D. the next dayJohn asked me ________ interested in any kind of sports.A. if I were B. if I were C. if I was D. if I wasJohn asked me ________...
Đọc tiếp
  1. I have ever told you he ________ unreliable.
    A. is B. were C. had been D. would be
  2. I told him ______ the word to Jane somehow that I ________ reach her during the early hours.
    A. passing will try B. will pass tried C. to pass would try D. he passed busy
  3. Laura said she worked on the assignment since ________.
    A. yesterday B. two day’s ago C. the day before D. the next day
  4. John asked me ________ interested in any kind of sports.
    A. if I were B. if I were C. if I was D. if I was
  5. John asked me ________ that film the night before.
    A. that I saw B. had I seen C. if I had seen D. if I had I seen
  6. The guest told the host that ________
    A. I must go now B. he must go now C. he had to go now D. he had to go him
  7. Tom ________ that he was having a party there on the evening.
    A. said to B. said C. asked D. told
  8. Claire told me that her father ________ a racehorse.
    A. owns B. owned C. is owning D. has owned
  9. You said you ________ chocolate, but you aren’t eating any.
    A. like B. has liked C. are liking D. liked
  10. Rachel insisted they ________ plenty of time.
    A. have B. have had C. are having D. had
  11. Rachel said she was taking her driving test ________ the next day.
    A. tomorrow B. yesterday C. yesterday D. last day
  12. Emma said she’d only had the new computer _________.
    A. the day before B. last day C. yesterday D. tomorrow
  13. Mathew said he was meeting a friend at the station later _________.
    A. the day before B. last day C. yesterday D. that day
  14. Hoa told me ________ she had seen Titanic three times.
    A. what B. that C. this D. why
  15. I rang my friend in Australia yesterday, and she said it ________ raining there.
    A. is B. was C. has been D. was
  16. Tom was ________ of having stolen the bicycle.
    A. ordered B. asked C. accused D. warned
  17. The doctor ________ him to take more exercise.
    A. told B. tells C. has told D. had told
  18. Minh exclaimed ________ beautiful the car was.
    A. how beautiful was the car B. how beautiful was the car C. how beautiful the car is D. how beautiful the car was
  19. Mathew ________ Emma that her train was about to leave.
    A. has reminded B. has reminded that C. reminded D. reminded that
  20. Ann ________ and ________ she had seen Titanic three times.
    A. said good bye to me C. says me good bye B. tell me good bye C. told me good bye
  21. I told you __________ switch off the computer, didn’t I?
    A. don’t B. not C. not to D. to not
  22. Sarah was driving too fast, so I ________ to slow down.
    A. asked her B. said her C. ask her D. have asked her
  23. Someone ________ me that there’d been an accident on the motorway.
    A. asked B. said C. spoke D. told
  24. I couldn’t move the piano alone, so I asked Tom ________ to give a hand.
    A. has given a hand B. gave a hand C. to give a hand D. give a hand
  25. Tom said that New York ________ more lively than London.
    A. is B. be C. was D. were
  26. Judy ________ going for a walk, but no one else wanted to.
    A. decided B. offered C. promised D. suggested
  27. Jack asked me ________ a violin.
    A. when do you come from B. where I come from C. where I came from D. where did I come from
  28. She asked me ________ I liked music.
    A. when B. if C. do D. what
  29. She said that she had to do her homework ________ she did it before.
    A. before B. after C. because D. while


7
3 tháng 7

1.A

2.C

3.C

4A

5C

6D

7B

8B

9D

10D

11D

12A

13D

14B

15B

16C

17A

18D

19D

20D

21C

22A

23D

24C

25C

26D

27C

28B

29C

TICK CHO MIK NHA

5 tháng 7

I have ever told you he ________ unreliable.

A. is B. were C. had been D. would be

I told him ______ the word to Jane somehow that I ________ reach her during the early hours.

A. passing will try B. will pass tried C. to pass would try D. he passed busy

Laura said she worked on the assignment since ________.

A. yesterday B. two day’s ago C. the day before D. the next day

John asked me ________ interested in any kind of sports.

A. if I were B. if I were C. if I was D. if I was

John asked me ________ that film the night before.

A. that I saw B. had I seen C. if I had seen D. if I had I seen

2 tháng 7

a; -(3 - 2\(x\)).(\(x+1\))

= - 3.(\(x+1\)) + 2\(x\).(\(x+1\))

= -3\(x\) - 3 + 2\(x^2\) + 2\(x\)

= -(\(3x\) - 2\(x\)) - 3 + 2\(x^2\)

= -\(x\) - 3 + 2\(x^2\)

= 2\(x^2\) - \(x\) - 3

b; 2\(x\).(3 - \(x\)) - (\(x+1)^2\)

= 6\(x\) - 2\(x^2\) - (\(x^2\) + 2\(x\) + 1)

= 6\(x\) - 2\(x^2\) - \(x^2\) - 2\(x\) - 1

= (6\(x\) - 2\(x\)) - (2\(x^2\) + \(x^2\)) - 1

= 4\(x\) - 3\(x^2\) - 1

= - 3\(x^2\) + 4\(x\) - 1

c; (\(x+4\))(2 - \(x\)) - (\(x^2\) - 2)

= \(x\).(2 - \(x\)) + 4.(2 - \(x\)) - \(x^2\) + 2

= 2\(x\) - \(x^2\) + 8 - 4\(x\) - \(x^2\) + 2

= -(4\(x\) - 2\(x\)) - (\(x^2\) + \(x^2\)) + (8 + 2)

= - 2\(x\) - 2\(x^2\) + 10

= - \(2x\) - 2\(x^2\) + 10

= - 2\(x^2\) - 2\(x\) + 10

d; - 2.(\(x-1\)).3\(x\) - 3\(x\).(\(x+2\))

= - 6\(x^2\) + 6\(x\) - 3\(x^2\) - 6\(x\)

= - (6\(x^2\) + 3\(x^2\)) + (6\(x-6x\))

= - 9\(x^2\) + 0

= -9\(x^2\)

2 tháng 7

Hình như là con muỗi á bạn

MT
2 tháng 7

Muỗi Hại đến sức khỏe chủ yếu qua lây bệnh: malaria, sốt vàng, sốt xuất huyết, Zika… Giết khoảng 725.000–1.000.000 người mỗi năm

Con người

Giết lẫn nhau qua homicide: khoảng 400.000–475.000 vụ tử vong mỗi năm .

Rắn

Gây tử vong khoảng 50.000–138.000 người mỗi năm, đặc biệt ở khu vực nông thôn có ít kháng huyết thanh chống nọc độc .