Dãy các số chẵn liên tiếp bắt đầu từ 2 đến 246 có bao nhiêu số hạng?

Giúp với ạ chắc chắn vote 5 sao

Exercise 3: Complete the sentences with tag questions. 1. Thu’s father reads a morning newspaper everyday, ? 2. The teacher is going to explain a new grammar lesson, ? 3. Their classmates were so excited about the games yesterday, ? 4. Lan enjoys sewing clothes for her doll, ? 5. Hoa did a lot of homework last night, ? 6. Schools may be closed if it snows heavily, ? 7. She has visited the citadel in Hue twice, ? 8. People have to rebuild the building after fire, ? 9. Their children enjoy playing computer games, ? 10. You will have a cable TV soon, ? Exercise 4: Complete the sentences with tag questions. 1. I am making a big mistake, ? 2. Let’s go shopping at Saigon Coop Mart, ? 3. Children should drink a lot of milk and fruit juice, ? 4. Bring your camera with you to the party, ? 5. These shoes need to be fixed, ? 6. You must ask for your parents’ permission to join the trip, ? 7. Ba likes healthy food, ? 8. Thu didn’t take part in the competition, ? 9. Phong hasn’t been to Hanoi before, ? 10. She can ride to school by herself, ?

helppppp meeeeeeeeeeeeeeeeeeeeeeeeee

Exercise 2: Choose the correct answers 1. Lanspeaks Chinese very well, ? A. does she B. doesn’t she C. is she D. was she 2. John has worked hard, ? A. does he B. did he C. has he D. hasn’t he 3. They invited him to the party, ? A. do they B. don’t they C. did they D. didn’t they 4. They are leaving here tomorrow, ? A. do they B. are they C. aren’t they D. did they 5. I am a bit late, ? A. am not I B. aren’t you C. are you D. aren’t I 6. No one is different to praise, ? A. is one B. isn't one C. is he D. are they 7. Somebody has left these socks on the bathroom floor, ? A. have they B. haven’t they C. has he D. hasn’t he 8. James owns a restaurant, ? A. does he B. is he C. doesn’t he D. didn’t he 9. You aren’t too busy to talk, ? A. are you B. have you C. aren’t D. do you 10. The ticket to London doesn’t cost a lot, ? A. do they B. does it C. is it D. isn’t it

tính Căn 49-12√5 + Căn 49+12√5

Tính `a^3+ b^3` , biết `a + b = 7` và `ab = 3`

Ex2. Rewrite the following sentences that keep the same meaning 1. Although Tom was a poor student, he studied very well. In spite of ______________________________________ 2. Although the weather was bad, she went to school on time. Despite ________________________________________​ 3. My mother told me to go to school although I was sick. In spite of ______________________________________ 4. Tom was admitted to the university although his grades were bad. Despite ________________________________________ 5. In spite of his good salary, Tom gave up his job. Although _______________________________________ 6. He didn’t win an Oscar for Best Actor although he performed excellently. Despite _______________________________________

giúp tóoooooooooooooooooooooooooooooooooooo

giúp mình với ạ!!!xin cảm ơn :333 #phương trình lượng giác cơ bản