cho tg ABC có A - B = 90*. Từ C kẻ CH vuông góc với AB. CM: HAC = BCH

Nêu công thức tính cạnh của hình lập phương khi biết diện tích xung quanh

Mọi người giúp mik làm bài này với ( vẽ hình và giải) mình cảm ơn

Một oto chuyển động thẳng đều với vân tốc ν. Nếu tác dụng lên oto một lực F như trong hình vẽ thì oto chuyển động thế nào?

I-tìm lỗi sai và sửa 1. Would you please showing me the way to the nearest bank A.sowing. B.the way. C.to. D.the 2. My parents encouraged me taking part in the summer course in Singapore. A.me. B.taking part. C.the. D.in 3. My brother didn’t come back to the home village, and so did I. A.come back B.the. C.so. D.did 4. Children under the age of five are not allowed taking part in the game. A.the age. B.of. C.taking. D.in II- chọn câu trả lời đúng nhất 1. In some countries, school children...learn two languages at school nowadays. A.have to. B.had to. C.should. D.should have 2. They told their parents that they...their best to do the test. A.try. B.will try. C.would try. D.had tried 3. He told the story as if he...everything. A.knew C.was knowing B.has been known. D.had known 4. All the homework... at home. A.should do. B.should be done C.should make. C.should be made 5. Lan enjoys watching Tv after dinner,.....? A.does she. B.doesn’t she. C.did she. D.didn’t she

MN làm giúp ạ!!! Chỉ cần ghi đáp án với số câu ở trước là đc ạ BÀI TẬP CÂU ĐIỀU KIỆN LOẠI 1 Exercise 4: Put the verbs in the brackets in the correct tense 1) If we ________ (send) an invitation, our friends _________ (come) to our party. 2) He __________ (not/ understand) you if you _________ (whisper). 3) They __________ (not/ survive) in the desert if they __________ (not/take) extra water with them. 4) If you __________ (press) CTRL + s, you __________ (save) the file. 5) You __________ (cross) the Channel if you __________ (fly) from Paris to London. 6) Fred __________ (answer) the phone if his wife __________ (have) a bath. 7) If Claire __________ (wear) this dress at the party, our guests __________ (not/stay) any longer. 8) If I __________ (touch) this snake, my girlfriend __________ (not/ scream). 9) She __________ (forget) to pick you up if you __________ (not/phone) her. 10) I __________ (remember) you if you __________ (give) me a photo Exercise 5: Rewrite the following sentences as directed 1. If she should come, tell her to wait for me. (using inversion with SHOULD) …………………………………………………………………………………… 2. If I don’t come here early, I will miss the bus. Unless……………………………………………………………………… 3. If he doesn’t do that, he will get bonus. Unless……………………………………………………………………… 4. If she doesn’t water these trees, they will die Unless……………………………………………………………………… 5. I only come if they invite me. Unless……………………………………………………………………… 6. In case it rains, we’ll stay at home. (if) …………………………………………………………………………………… 7. If you don’t leave the office, I will call the police. (or) …………………………………………………………………………………… 8. You can’t visit Paris unless you get a visa. (If) …………………………………………………………………………………… Exercise 6: Using the given information, make conditional sentences using “IF” 1. Rita might fail her driving test. But she can take it again. _____________________________________________ 2. Liverpool might lose. If they do, Terry will be upset. _____________________________________________ 3. The office may be closed. In that case, Mike won't be able to get in. _____________________________________________ 4. Cathy may arrive a bit early. If she does, she can help her mother to get things ready. _______________________________________ 5. The party might go on all night. If it does, no one will want to do any work tomorrow. _____________________________________________ 6. Alice may miss the train. But she can get the next one. _____________________________________________ 7. Is Jack going to enter the race? He'll probably win it. _____________________________________________ 8. Stop talking or you won’t understand the lesson _____________________________________________ 9. Fail to pay and they will cut off the electricity. _____________________________________________ 10. Don’t touch that wire or you may get an electric shock. _____________________________________________

Tìm GTNN `x^2 -6x+3` `4x^2 +12x+5` `9x^2 -6x+4`

Viết calli chữ : " Bạn đến chơi nhà ". NL : Cái này là tiu đề lớp 7 ó :>

Complete each sentence with an appropriate preposition. 1. The Lim Festival takes place every year _________ the 13th day of the first lunar month. 2. Elephant Race Festival is held _________ Don Village, Dak Lak Province. 3. Fishermen pray _________ the good fortune at Whale Festival. 4. _________ the Mid-Autumn Festival, children carry beautiful lanterns. 5. They decorate their homes _________kumquat trees and peach branches. 6. The Hung King Temple Festival has become a public holiday _________ 2007. 7. The Buddhist Festival lasts _________ three months from the first to the third lunar month. 8. Foreigners are always keen ________ watching Vietnamese families prepare ________ Tet. 9. At the Kate festival, Cham people take part _________ a procession to the nearby temple. 10. The Lunar New Year typically takes place _________ late January or early February

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