Mong mng giúp mình vs, cảm ơn mng 😃

Một ô tô đang chạy vơi vận tốc 15m/s thì người lái xe đạp thắng (phanh) và từ thời diểm đó ô tô chuyển động chậm dần đều với vận tốc v(t) = −5t + 15(m/s). trong đó t là khoảng thời gian tính bằng giây kể từ lúc đạp thắng (phanh). Tính quãng đường ô tô đi được trong 5 giây cuối.

Kết hợp các cặp câu sau, sử dụng “enough + noun + to+ Vnt”: 1. We have money. We can buy that motorcycle. 2. She has a lot of free time. She can go to the movies with you. 3. Mr. Brown has experience. He can solve this problem. 4. There are enough knitting frames in the workshop. Students can practice knitting. 5. I haven’t got money. I can’t go away on holiday. 6. We have enough time. We can get to the airport on time. 7. She doesn’t know enough French. She cannot read a newspaper in French. 8. Lien has no friends. She cannot share this work. 9. There are a lot of books. He will stay at home to read them. 10. Tom bought many books. I could borrow him.

The sun, planets, and moons are all part of our solar system. The sun is a huge star in the middle of the solar system. It is the only star we can see during the day. The sun is (1) ….............. brighter than the stars we see at night, because it is much closer to the (2) ………......... It is made of gases that are released in the form of light and heat. The planets are all different sizes. Mercury is the smallest planet. Jupiter is the largest planet. It is eleven times (3) ………......... than the Earth! All eight of the planets are much smaller than the sun. All of the planets in our solar system move around the sun in an oval (4) ………......... called an orbit. It is shaped something like an egg. The sun has a strong force that pulls all of the planets toward it. This force, called gravity, is what makes the planets (5) ………......... in their orbits. As each planet orbits the sun, it is also spinning around like a top. This spinning is called rotation. Each planet rotates at a different speed. It takes Jupiter less than 10 hours to rotate one time, but it takes Venus 243 days! Choose the best answer. 1. A. very B. much C. so D. too 2. A. Moon B. star C. orbit D. Earth 3. A. wider B. thicker C. longer D. deep 4. A. road B. route C. path D. way 5. A. lie B. live C. stand D. stay Answer the questions below. 1. Which star can we see during the day? .......................................................................................................................................... 2. Why the sun is so bright? .......................................................................................................................................... 3. What does the orbit look like? .......................................................................................................................................... 4. What is the strong force of the sun called? .......................................................................................................................................... 5. Which one finishes its rotation faster, Jupiter or Venus?

Giúp mình với ạ cảm ơn trước ạ:3

2 câu đầu ạ ....................

Gọi M, m lần lượt là GTLN , GTNN của hàm số y= (sin x + cos x+1)/ căn ( 2+ sin 2x) . Tính M + căn 3. m

Câu 11 Chất nào sau đây là đồng phân của vinyl fomat HCOOCH = CH2? A. Axit axetic B. Axit fomic C. Axit acrylic D. Axit propionic Câu 10 Hợp chất X có %C = 48,65%, %H = 8,11.Công thức đơn giản nhất của X là A.C4H8O B. C3H6O2 C. CH2O D. C5H10O2 Câu 03 Cặp chất nào sau đây không có cùng côngthức đơn giản nhất? A. Axetilen và benzen B. Etanol và đimetylete C.Axit benzoic và glixerol D.Benzen và stiren

SHE Must clean her room ever week -> She har........................

Giúp mình vs ak, mình cần gấp, tks mng ak :)))