Một mảnh vườn hình thang có đáy bé là 9,6m, đáy lớn bằng đáy bé. Tính diện tích mảnh vườn đó, biết chiều cao mảnh vườn là 6m.

Cho tam giác nhọn ABC (AB < AC) có D, E lần lượt là trung điểm của BC, CA. Trên tia đối của tia ED, lấy điểm M sao cho ED = 1/2 EM. a) Chứng minh DE//AB và AMEB là hình thang có hai đáy bằng nhau. b) Gọi N là trung điểm của ME, K là giao điểm của BE và MC, I là giao điểm ca AC và BM. Chng minh IK là đường trung bình ca tam giác MBC. Từ đó chứng minh AN = IK. c) Gọi H là giao điểm của BN và AC. Chứng minh rằng AB, NC và HD đồng quy

Exercise 4: Choose the correct answer. 1. John: Wow, it's freezing out there. Jane: I __________ some coffee to warm us up. Do you want a piece of pie as well? John: Coffee sounds great! But I __________ dinner with some friends later, so I'd better skip the pie Jane: I __________ to dinner tonight too, but I'm having a piece of pie anyway. A. will make – am going to have – am going B. will make – will have – will go C. am making - will have - will go D. am making - am having - am going 2. I __________ there at four o'clock, I promise. A. am going to be B. will be C. am being D. am 3. He __________ the car if he doesn’t have enough money to build a new house. A. will sell B. is selling C. is going to sell D. sells 4. I love London. I __________ there next year. A. am probably going B. am probably going to go C. will probably go D. probably go 5. A: “I __________ to the party, would you like a lift?” - B: “Okay, I __________ the bus, I'll come with you.” A. am going to drive / am not taking B. will drive / won’t take C. am driving / am not going to take D. am driving / won’t take 6. What time __________ ? A. will the sun normally set B. is the sun normally setting C. is the sun normally going to set D. does the sun normally set 7. The students __________ the bus to school every morning. A. will take B. take C. are taking D. are going to take 8. I wonder if Ann knows that the time of the meeting has been changed. – Probably not. I __________ tell her on my way home. I’m glad you thought of it. A. tell B. am telling C. am going to tell D. will tell 9. I _______ return the book after I read it. A. will B. am C. not D. going to 10. A: This letter is in French, and I don't know French. Can you help me? B: Sure, I ___________ it for you. A. am going to translate B. won't translate C. will translate D. am translate 11. The next term ___________ on 16th September. A. begin B. begins C. will begin D. has begun 12. Dad can't take you to school. He __________ an appointment at the dentist's at 8.30. A. going to have B. will have C. is having D. has 13. The library __________ at 8.30 and __________ at 7.30. A. open – close B. is opening - is closing C. will open - will close D. opens – closes 14. So, are you coming along, after all? - Well, I don't know. What time __________ ? A. you're leaving B. will you be leaving C. will you leave D. do you leave 15. "Do you know it's Maggie's birthday today?" - "Yes, she __________ a party tonight." A. has B. is to have C. is having D. will have

giải pt √x - 1 / √ x+ 1 = 2 chú ý là căn nó không phải là nguyên x mà cả x - 1 và bên kia cũng thế

Exercise 2: Circle the correct answer. 1. He will get married/is going to get married next year 2. I will send/am sending Alex your letter when I see her tomorrow. 3. What terrible traffic! Just look at the long queue. We will miss/are going to miss our flight. 4. I hope you will visit/are going to visit my new house in Charlington some time. 5. In the future, many young people will start up/are going to start up their own businesses. 6. The sky is blue. It will be/is going to be another hot day. 7. A: What are your plans for the holiday? - B: I will visit/am visiting my grandparents and then going trekking in Sapa. 8. A: I can't fix the problem in my computer, Jason. - B: Alright. I will take/am going to take a look at it. 9. I will take/am taking you out for ice-cream as long as you get an A+ on your Math test. 10. A: Do you want to have pork or beef? - B: I think we will have/we are having the beef, please. 11. 'I haven't got my phone.' 'That's OK. I will lend/ am going to lend you mine. 12. It's Julia's birthday next week, so we will buy/ are going to buy her some flowers. 13. Will you lend me £10? I promise I will give/ am going to give it back to you tomorrow. 14. We will have/ are going to have a barbecue tomorrow. It's all planned, so I hope it won't rain. 15. 'Jim's starting university tomorrow.' 'What will he/ is he going to study?

Phân tích đa thức thành nhân tử

Giúp mình với ạ mình đang cần gấp

Lm hộ mình câu a đc ko mình đánh giá 5 sao cho

X. Make questions for the underlined parts. 1. She needs twelve eggs to make two cakes. 2. They drank a lot of wine at the party last night. 3. I often drink coffee in the morning. 4. Beef noodle soup is my favourite food.

Exercise 3: Find and correct the error (if any). Put a (v) if the sentence is correct. 1. Are you planning any summer holiday? - I don't know yet. Perhaps I will stay at home. → ______________ 2. He is the worst tennis player of all. He is going to win. → ______________ 3. I haven't made up my mind yet. But I think I am going to find something nice in my mum's wardrobe. → ________ 4. Listen, I'm having a party this Saturday. Would you like to come? → ______________ 5. Our ferry will depart for Ibiza at 6 tomorrow morning. → ______________ 6. That glass is too near the edge. I think it is falling. → ______________ 7. The board of directors has reached the final decision. Harrison will lead the marketing team from next month. → ___ 8. We will wait in the shelter until the bus will come. → ______________