Đáp án+Giải thích các bước giải:
$m:3$ dư `2`
`⇒m-2\vdots 3``⇒m+1-3\vdots 3``⇒m+1\vdots 3(đpcm)`
Vì `m` chia `3` dư hai nên `m` có dạng là: `m=3k+2(k\inNN)`
Lại có:
`m+1=3k+2+1`
`↔m+1=3k+3`
`↔m+1=3(k+1)\vdots3`
Vậy nếu `m` chia `3` dư `2` thì `m+1\vdots3`
III. Put the correct form of the words in brackets. 1. The weather in Da Lat is often__________________. (change) 2. My best friend is caring and ________________. (rely) 3. What subjects do you _______________ in? (special) 4. Thank you for your __________________. (invite) 5. The _______________ here is so beautiful. (scene) PART C. DIALOG COMPLETION Circle the sentence that best completes each of the following exchanges. 1. Cara: “Excuse me, where are the changing rooms?” Shop assistant: “_______________” A. Sorry, I don’t get in. B. They’re over there, Miss. C. Can you exchange your clothes? Giáo Viên Chuyên Anh - Thầ y Bùi Văn Vinh - 0988.333.599 8 D. Here you are. 2. Seller: “________________” Tom: “ I’d like a kilo of beef, please.” A. Hello. How can I help you? B. What did you eat? C. What should I do? D. Here’s your chance. 3. Nina: “_____________ romantic comedies?” Rachel: “ In my opinion, they’re both funny and touching.” A. Are you interested in B. What about C. What do you think about D. Do you enjoy 4. Bill: “You have such an incredible house!” Bob: “__________________” A. Thanks. B. I hope that you will drop in. C. It costs an arm and a leg. D. Nothing much. 5. Kelly: “It’s time for us to recycle things to protect the environment.” Jane: “___________” A. It’s too late. B. We have a lot of time. Don’t worry! C. I completely agree with you. D. Do you think it’s possible? giúp mik với
Bài 1: Cho parabol (P) : y = `x^2` và đường thẳng (d) : y= 3mx + 1 - `m^2` ( m là tham số) a) TÌm m để (d) đường thẳng đi qua A( 1; -9)
Tìm tập hợp các điểm M, biết : xM = 0; y M thuộc R ( vẽ đồ thị )
tam giác abc có góc a bằng 30 độ góc b bằng 45 độ bc bằng 8cm. Tính AB
Mọi người làm giúp em bài này với ạ em cần nộp lúc 9h
mình vote 5 sao cho tất cả nhá Câu 45 The team played _____ and lost the match. A worst B badly C worth D bad Câu 46 A city is _____ than the country. A more exciting B the most exciting C excited D exciting Câu 47 This is the best music I have ever heard. A This is the first time I‘ve heard this good music. B I‘ve ever heard so good music as this. C I‘ve ever heard such a good music as this. D I’ve never heard better music than this. Câu 48 Peter’s very _____ at tennis. He won the game. A best B well C better D good Câu 49 Please listen _____ . A carely B care C carefully D careful Câu 50 Everybody was very _____ about you. A worry B worried C worrying D worringly
Calli : Happy Birthday to me ( Tone hồng ) Đẹp vào nha ^^ Góc cho bản thân : Chúc càng ngày càng học giỏi , xinh đẹp và nhận được nhiều điều may mắn . ^^ NL : Nay 24.8 ^^ Chúc mừng sinh nhật
các thiên tài giải cho em bài này ạ !!!
Calli: Chán =v= NL: Chào bủi sáng =v=
Which country in Southeast Asia has the highest gold medals from SEA games?
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến
