Giúp mình câu g vs, tính thể tích vật thể tròn xoay khi quay quanh trục Ox hình phẳng giới hạn bởi các đường

em hãy trình bày đầy đủ những điều gì đã biết về tam giác cân ?

Giúp mình với nha cám ơn các bạn ❤

VI.Viết lại câu sao cho nghĩa không đổi: 1.My room is smaller than your room. Your room ……………….......... ............................................................................................................ 2.No house on the street is older than this house. This house……....................................................................................................................................... 3.Nam is 1.75 meters tall. Ba is 1.65 tall. Nam is ……....................................................................................................................................... 4.Hang is the fattest girl in my class. No girl ……....................................................................................................................................... 5.I'm shorter than my sister. I…….................................................................................................................................................. 6.This exercise is more difficult than the last one. The last exercise……............................................................................................................................ 8.He is as old as my father. He is ………....................................................................................................................................... 9. English is more interesting than chinese Chinese is .................................................................................................................................................. 10. Hue isn't so noisy as Ha Noi. Ha Noi ................................................................................................................................................

Tính giá trị của biểu thức để mỗi biểu thức sau có giá trị bằng 0 a,5y² - 20 b,(x + 0) (x²+1)

Một xe tăng có khối lượng 40 tấn đang chuyển động trên đường nằm ngang với tốc độ 2 m/s thì bắn về phía trước lệch hướng chuyển động của xe một góc 300 hướng lên, một viên đạn nặng 5 kg với tốc độ 500 m/s so với xe. Động lượng của đạn so với đất là bao nhiêu

Cho mk hỏi là cái dòng này dùng để xét dấu của g(x) phải ko?

Giup mk vs mn oi 😅😅😅😅😅😍😍😍😍

BÀI 9 Cho vuông tại A, có AC = 12 cm, BC = 13 cm. Gọi I là trung điểm của BC, Trên tia AI lấy điểm K sao cho IA = IK. a/ Tính AB b/ Chứng minh từ đó suy ra là tam giác vuông. c/ Gọi M là trung đ của AC. Chứng minh MB = MK..

Finish the second sentence in such a way that it means the same as the sentence printed before it. 1. The furniture was too old for us to keep. → It was ................................................................................................................................................... 2. Nobody has cleaned the streets this week. → The streets ........................................................................................................................................... 3. While mending the road, they accidentally blocked our water pipes. → They accidentally cut .......................................................................................................................... 4. He brought the umbrella along but it didn’t rain. → He needn’t ........................................................................................................................................... 5. While I strongly disapprove of your behavior, I will help you this time. → Despite ................................................................................................................................................ 6. The underground is quick and cheap. → The underground is ............................................................................................................................. 7. He was annoyed because his secretary came late to work. → He objected to ..................................................................................................................................... 8. Neil regrets having sold his car. → Neil wishes .......................................................................................................................................... 9. The child ran out because of the strange noise. → The strange noise ................................................................................................................................ 10. Immediately after his arrival, things went wrong. → No sooner ............................................................................................................................................ There is a mistake in the four underlined parts of each sentence. 1. Jason’s professor had him to write his thesis many times before allowing him to present it A B C to the committee. D 2. I think Helen is accustomed to work eight hours a day. A B C D 3. The more frequent you exercise, the greater physical endurance you will have. A B C D 4. Only when you have had a chance to know various occupations you will decide on your career. A B C D 5. I tried to do everything to contact John two weeks ago but so far I don’t receive his reply. A B C D 6. Most students were able of finding good jobs three to six months after graduation. A B C D 7. The letter was sent by special delivery must be important. A B C D 8. Because the torrential rains that had devastated the area, the governor sent the National Guard to A B C assist in the clean-up operation. D 9. My brother attends an university in the Midwest which specializes in astrology. A B C D 10. Although Mark has been cooking for many years, he still doesn’t know to prepare French foods A B C D in the traditional manner.