Mọi người giúp e với ạ ... e đang gấp lắm ...:)
CMR : mọi số chính phương đều có dang 4k hoặc 4k+1
Mọi người giúp em ạ E đang cần gấp lắm ạ
Bài 1:Cho p và 8p-1 là các số nguyên tố.CMR:8p+1 là hợp số
Bài 2:CMR mọi số nguyên tố lớn hơn 2 đều có dạng 4k+1 hoặc 4k-1
Bài 3:1 số nguyên tố p chia cho 42 có số dư là r(r là hợp số).Tìm r???
giuspe e với mọi người ơi e đang gấp lắm, e cảm ơn ạ!
1 sat
2 has been
3 were
4 stopped
5 is becoming
6 to work
7 saw
8 to lock
9 produced
10 Does the film begin
Mọi người làm giúp em nhé em đang cần gấp lắm ạ e cảm ơn. Bài của e toàn khoanh thôi ạ
24 B
25 C
26 B
27 C
28 A
29 D
30 C
31 A
32 C
33 B
34 B
35 D
36 C
37 C
38 B
39 C
Mọi người làm giúp em nhé em đang cần gấp lắm ạ e cảm ơn. Bài của e toàn khoanh thôi ạ
1.A 2.B 3. D 4. C 5.B 6. A 7. D 8. C 9. D 10. B
11 B 12 D 13 C 14 A 15 C 16 A 17 D 18 B 19 B 20 C
21 A
22 A
1A 2B 3D 4D 5B 6A 7D 8C 9D 10B 11B 12C 13C 14A 15D 16A 17D 18B 19B 20C 21A 22A
Bài 1 : Chứng minh rằng mọi số nguyên tố lớn hơn 2 đều có dạng 4k+1 hoặc 4k+3
Mỗi số tự nhiên n khi chia cho 4 có thể có 1 trong các số dư: 0; 1; 2; 3. Do đó mọi số tự nhiên n đều có thể viết được dưới 1 trong 4 dạng: 4k, 4k + 1, 4k + 2, 4k + 3
Với k N*.
- Nếu n = 4k thi n là hợp số.
- Nếu n = 4k + 2 thi n là hợp số.
Vậy mọi số nguyên tố lớn hơn 2 đều có dạng 4k + 1 hoặc 4k +3. Hay mọi số nguyên tố lớn hơn 2 đều có dạng 4n + 1 hoặc 4n +3 với n N*.
Mọi người giúp e vs ạ, đang cần gấp lắm. Em cảm ơn nhìu :3333
8. As it is raining heavily, we can't go on a picnic
9. I suggest (that) you should get a plumber to check the pipes
10. If you don't succeed, you'll have to try it again
11. If she had enough money, she would buy the dictionary
12. I suggest using gas instead of burning coal
13. I suggest you should install a burglar alarm in your house
14. If we recycle, we will save natural resources
15. If you don't hurry up, you will be late for work
16. If you work too much, you will be tired
17. I suggest putting different kinds of.....
18. Lan broke the glass as she was careless
19. If you litter the place around you, it will be a junk yard
20. Paul suggested using public transportation
21. If she doesn't reduce the use of water and electricity, she will have to.....
22. Since the weather was snowy, we postponed our soccer match
23. Tan suggested that Lam should buy a car
24. Lan suggested that I should look for another job
25. The scientist suggested using public transportation instead of private vehicles
26. giống c12
27. The principle is pleased that the students in grade 9 are good helpers
28. If we put garbage into the bins, we will minimize pollution
29. If you are careless, you will broke the vase
30. If you don't stop cutting trees, I will call the police
31. If you use electricity to catch fish, you will be fined heavily
32. I'm sure that that boy will have a test.....
33. We are disappointed that you threw the rubbish on the street
34. It is extremely important that all of us work together to protect the environment
35. I'm sorry that I couldn't do anything to help you
36. He is sure that environmental pollution in this area can be controlled
37. She was annoyed that he damaged the car yesterday
Tìm số tự nhiên n sao cho: 3n + 1 chia hết cho 11 - n
Mọi người giúp e câu này vs.
E đang cần gấp lắm ạ!!!
\(3n+1⋮11-n\)
\(=>3n+1⋮-\left(n-11\right)\)
\(=>3n-33+34⋮n-11\)
\(=>34⋮n-11\)
\(=>n-11\inƯ\left(34\right)\)
Nên ta có bảng sau :
Tự lập bảng nhé bạn :P
mọi người giúp e với ạ e đang cần gấp
Mình viết phần điền tiếp thui nhé, cái đề cho mk k viết
1 where they were organizing the party
2 if I knew the woman in red over there
3 Peter why he didn't turn off the light
4 she was going
5 if the nearest post office was far away
6 what we were going to do that Christmas
7 where I worked
8 how far it was from my house to my school
9 if his friend was a good person
10 how many people there were in my family
1. ...where they were organizing the party.
2. ...if I knew the woman in red over there.
3. ...Peter why he didn't turn off the light.
4. ...she was going.
5. ...if the nearest post office was far away.
6. ...what we were going to do this Christmas.
7. ...where I worked.
8. ...how far it was from my house to my school.
9. ...if his friend was a good person.
10. ...how many people there were in my family.
1. ...where they were organizing the party.
2. ...if I knew the woman in red over there.
3. ...Peter why he didn't turn off the light.
4. ...she was going.
5. ...if the nearest post office was far away.
6. ...what we were going to do this Christmas.
7. ...where I worked.
8. ...how far it was from my house to my school.
9. ...if his friend was a good person.
10. ...how many people there were in my family.