giải các phương trình sau: $3^{2}$-17x+24 = $\sqrt[]{x-3}$ +3$\sqrt[]{5-x}$

Exercise 4: Hoàn thành đoạn hội thoại sau với các từ đã cho: twice after cooking often late are Adam: What (10)……… you doing, Susan? Susan: I’m (11) …………… dinner. Adam: Do you like cooking? Susan: Yes, I do. I usually cook (12) ………….. school because my mother always comes home (13) ………... I help my mother with shopping too. Adam: How (14) ……………. do you go shopping? Susan: (15) ……………. a week.

I. Make questions for the underlined part in each sentence. 1.London is on the River Thames. @ …………………………………………………………………………………… 2.The Eiffel Tower first opened on 6th May 1889. @ …………………………………………………………………………………… 3.We are going to visit the Empire State Building tomorrow. @ …………………………………………………………………………………… 4.I went to London in my last vacation. @ …………………………………………………………………………………… 5.The weather in London was very cloudy and wind. @ ……………………………………………………………………………………

Một hình chữ nhật có chiều dài gấp rưỡi chiều rộng và chu vi bằng 180m. Hỏi sau khi kéo chiều dài thêm 5m, phải kéo chiều rộng thêm bao nhiêu mét để được một hình vuông ?

mong mọi ngs giúp đỡ mk đg cần gấp mk sắp phải nộp r

1)x^2 + 3y^2 + 2z^2 - 2x + 12y + 4z + 15 = 0 (Tìm X nha anh chị em)

phân tích thành nhân tử: x(x+y)^2-y(x+y)^2+xy-x^2

Đặt lại nha Vẽ mầm cây Ai có nhu cầu đặt biệt danh vô bl tui rep all Mong Ad không xoá nữa ạ

Mới học đến ĐỐI XỨNG TÂM nên ko dùng những kiến thưc chưa học

III. Find the mistake in the four underlined parts of each sentence and correct it. 1. If you don’t study your mathematics, you can’t be able to do the exercises. A B C D 2. My niece can read by the time she was four years old. A B C D 3. Most ants could lift objects that are ten times heavier than their own bodies. A B C D 4. Tom won’t be able to working in the shed because he is ill. A B C D 5. Bob was in an accident, but he won’t be able to remember how he had hurt himself. A B C D 6. That’s my sister over there. She stands next to the window. A B C D 7. Tom can’t listen to music because his CD player was broken. A B C D 8. We couldn’t hear the teacher because the students was very noisy. A B C D 9. Robots can work everywhere on the world, including on the seabed or in a volcano. A B C D 10. Teaching robots can explain the lessons again or help students on their homework. A B C D 11. A robot can builds houses, apartments and offices. A B C D 12. Scientists are working on how to invent a intelligent robot. A B C D 13. The children can work in groups when they were at school yesterday. A B C D 14. Children couldn’t stayed at home alone when they were 5 years old. A B C D 15. I don’t agree of you that a robot will be able to understand what people say. A B C D 16. Vy is really excited with her first day at school. A B C D 17. There are a living room, three bedrooms, a bathroom and two toilets in my house. A B C D 18. I'm going to Hoan Kiem Lake watching fireworks tonight (D). A B C D 19. Tom is a talkative student. He never talks in class. A B C D 20. There are many good restaurant and amusement parks in our neighborhood A B C D