Cho biết: 30 x 31 x 32 x 33 x k = 66*81440
k là một số tự nhiên thích hợp và * là một chữ số chưa biết.
Vậy chữ số * là:
K
Khách
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25 tháng 1 2019
Every year when Tet comes, my family will buy a cherry tree to play spring but this year is different. My father was given a apricot tree by a friend in the south, so this year my family used apricot to adorn the house. The apricot tree is not very tall, just a little higher than me. The branch of the tree radiates around a cherry tree. Young green leaves are full of life. But the most beautiful is the apricot blossom. Apricot flowers are similar to the peach blossom of the North but differ in color and size. Its petals are bigger than peach blossom and have a warm bright yellow. My mother said that yellow was the warm sunshine of the far south, which somehow made the house more cozy. Yellow pistil is equally striking. Before the 29th New Year, she and her mother decorated the tree with small lanterns, sentences, flashing lights that made the tree extremely beautiful. Anyone who came to my house would give me a compliment. But apricot flowers do not adapt to the cold weather in the North so only a few days after Tet is the flower begins to fall. I'm sad but I can't do anything. My father told me that next year, I would ask you to buy a tree to return to the spring to play, then there would be conditions for me to go to the South to visit the apricot garden. I am very happy and looking forward to next year's Tet.
25 tháng 1 2019
Malaysia has considered English as its official language for years.
NN
10
TT
1
6 tháng 2 2019
| Mdds | Vùng phân bố chủ yếu |
| dưới 1 người/km2 | Bán đảo Alatxca Bắc Canada |
| Từ 1 đến 10 người/km2 | Hệ thống Coocdie |
| Từ 11 đến 50 người/km2 | Dải đồng bằng hẹp ven Thái Bình Dương |
| Từ 51 đến 100 người/km2 | Phía đông Mixixipi |
| Trên 100 người/km2 | Dải đất ven bờ phía Nam Hồ L và duyên hải Đông Bắc Hoa Kì |
Bạn tự giải thích
P/S : Hoq chắc :>
KR
27 tháng 1 2019
Although được dùng để nối 2 vế hoặc 2 câu mang nghĩa đối lập. Although có thể đứng đầu câu hoặc giữa câu.
25 tháng 1 2019
Mr Lam is a farmer. He has many paddy fields and he produces a lot of rice. He has a few fruit trees, some animals and a garden of vegetables.
*Questions:
1. What does Mr. Lam do? - He is a farmer.
2. How much rice does Mr.Lam produce? - A lot of rice.
3. Does he have any paddy fields? - Yes, he has many.
4. Does he have any vegetables gardens? - Yes, he has one.
LH
25 tháng 1 2019
nói với nhóm của bạn về chương trình yêu thích của bạn. Cuộc nói chuyện của bạn nên bao gồm các thông tin sau
HA
25 tháng 1 2019
dt đếm đc
| STT | Danh từ | Nghĩa |
| 1 | accident | Tai nạn |
| 2 | account | tài khoản |
| 3 | actor | diễn viên |
| 4 | address | địa chỉ nhà |
| 5 | adult | người lớn |
| 6 | animal | thú vật |
| 7 | answer | bài giải |
| 8 | apartment | chung cư |
| 9 | arle | bài báo |
| 10 | artist | họa sĩ |
| 11 | baby | bé con |
| 12 | bag | cái cặp sách |
| 13 | ball | quả banh |
| 14 | bank | ngân hàng |
| 15 | battle | trận đánh |
| 16 | beach | bờ biển |
| 17 | bed | giường ngủ |
| 18 | bell | chuông |
| 19 | bill | hóa đơn |
| 20 | bird | chim |
| 21 | boat | con thuyền |
| 22 | book | sách |
| 23 | bottle | chai |
| 24 | box | cái hộp |
| 25 | boy | con trai |
| 26 | bridge | cầu |
| 27 | brother | anh em |
| 28 | bus | xe buýt |
| 29 | bush | bụi gai |
| 30 | camp | cắm trại |
| 31 | captain | thuyền trưởng |
| 32 | car | xe hơi |
| 33 | card | Thẻ |
| 34 | case | trường hợp |
| 35 | castle | Lâu đài |
| 36 | cat | con mèo |
| 37 | chair | chiếc ghế |
| 38 | chapter | chương |
| 39 | chest | ngực |
| 40 | child | trẻ em |
| 41 | cigarette | thuốc lá |
| 42 | city | thành thị |
| 43 | class | lớp |
| 44 | club | câu lạc bộ |
| 45 | coat | áo khoác |
| 46 | college | trường đại học |
| 47 | computer | máy tính bàn |
| 48 | corner | góc |
| 49 | country | đất nước |
| 50 | crowd | đám đông |
dt ko đếm đc
| STT | Danh từ | Nghĩa | Câu ví dụ |
| 1 | access | quyền | Only a few people have access to this information. |
| 2 | accommodation | chỗ ở | Does the company provide accommodation for the workers? |
| 3 | adulthood | trưởng thành | You'll have more freedom in adulthood, but more responsibilities too. |
| 4 | advertising | quảng cáo | A lot of creative people work in advertising. |
| 5 | advice | lời khuyên | If you're not sure what to do, ask your friends for advice. |
| 6 | aggression | xâm lược | If he needs an outlet for his aggression, he could try boxing. |
| 7 | aid | viện trợ | Should rich countries give more aid to poor countries? |
| 8 | air | hàng không | If there's not enough air in the room, open a window. |
| 9 | alcohol | rượu | Whiskey contains much more alcohol than beer. |
| 10 | anger | Sự phẫn nộ | Why was someone with so much anger allowed to own a gun? |
| 11 | applause | tráng pháo tay | After the concert, the applause went on for at least five minutes. |
| 12 | arithme | toán học | I wanted to work in a bank because I was always good at arithme. |
| 13 | art | môn vẽ | If you want to learn about art, visit the national gallery. |
| 14 | assistance | hỗ trợ | After calling 911 for assistance, we waited for an ambulance. |
| 15 | athles | điền kinh | Jenny's very good at athles, and she's even won some medals. |
| 16 | attention | chú ý | The teacher found it difficult to get her students' attention. |
| 17 | bacon | Thịt ba rọi | Would you some bacon with your scrambled eggs? |
| 18 | baggage | hành lý | The customs officer at the airport checked all my baggage. |
| 19 | ballet | ba lê | My dad loved ballet, and he even took us to see Swan Lake. |
| 20 | beauty | nét đẹp | Many poets have been inspired by the beauty of nature. |
| 21 | beef | thịt bò | I don't eat beef or pork, but I fish and seafood. |
| 22 | beer | bia | It was a good party, but I think we drank too much beer. |
| 23 | biology | môn sinh học | If you study biology, you'll learn how amazing life really is. |
| 24 | blood | máu | Blood carries oxygen from the lungs to all the body's cells. |
| 25 | botany | thực vật học | When I studied botany, we often collected plants from forests. |
| 26 | bread | bánh mì | I sliced a loaf of bread and then made some sandwiches. |
| 27 | business | kinh doanh | Before going into business, ask your father for some advice. |
| 28 | butter | bơ | Would you some butter on your toast? |
| 29 | carbon | carbon | Climate change occurs when there's too much carbon in the air. |
| 30 | cardboard | các tông | We could get cardboard for our signs by cutting up old boxes. |
| 31 | cash | tiền mặt | If you need some cash, go to an ATM machine. |
| 32 | chalk | phấn viết bảng | Don't forget to take some chalk to your class. |
| 33 | chaos | hỗn loạn | There was chaos after the fire started, with people running in all directions. |
| 34 | cheese | phô mai | Do you want some extra cheese on your pizza? |
| 35 | chess | cờ vua | Do you feel having a game of chess? |
| 36 | childhood | thời thơ ấu | For most of my childhood, our family lived in London. |
| 37 | clothing | quần áo | We were poor, but we always had enough food and clothing. |
| 38 | coal | than đá | My grandmother used to cook on a stove that burned coal. |
| 39 | coffee | cà phê | How many cups of coffee do you drink every day? |
| 40 | commerce | thương nghiệp | Some historians say commerce began about 10,000 years ago. |
| 41 | compassion | lòng trắc ẩn | The Buddha taught us to feel compassion for all living things. |
| 42 | comprehension | sự hiểu | Sayoko's comprehension of written English is excellent. |
| 43 | content | Nội dung | This website's content is great, and so is the design. |
| 44 | corruption | tham nhũng | All this corruption has made many poliians very rich. |
| 45 | cotton | bông | American farmers used African people as slaves to pick cotton. |
| 46 | courage | lòng can đảm | The protesters showed so much courage, knowing they could be shot at any moment. |
| 47 | currency | tiền tệ | How much local currency will I need to get a taxi from the airport? |
| 48 | damage | hư hại | We couldn't believe how much damage the storm had caused. |
| 49 | dancing | khiêu vũ | My legs are sore after so much dancing in the club last night. |
| 50 | danger | nguy hiểm |
25 tháng 1 2019
I love watching football.My favuorite player is Dang Van Lam. He is a good goalkeeper. He won " The best goalkeeper of Viet Nam" award in the V-League and record of the AFF Cup clean-up time: 405 minutes in 2018. I love Dang Van Lam because he plays good, hard-working, and funny
Đây là bài của mình nhé. Mong bạn nhận xét
Giải:
30 x 31 x 32 x 33 x k
=(10 x 3) x 31 x 32 x (11 x 3) x k
= 10 x 31 x 32 x 11 x 9 x k = 66*81440
Vậy suy ra 66*81440 chia hết cho 9 vì tích trên có thừa số 9
Mặt khác 6 + 6 + 8 + 1 + 4 + 4 + 0 = 29
Vậy 66*81440 chia hết cho 9 thì * sẽ bằng 7
Vậy * = 7
Đ/S: 7
Chúc bạn học tốt !!!