Một con tàu đi theo hướng Đông Bắc với vận tốc v, bộ phận đo gió trên tàu thấy gió thổi vuông góc với trục nối đuôi tàu và đầu tàu với vận tốc cũng là v. Hãy xác định vận tốc của gió đối với trái đất?

tìm x để M=13/3 biết M=( √x+1+x)/ √x làm dưới dạng phân số giúp mik ạ

Các cao nhân giỏi anh xin hãy cứu giúp em với hix đây là dạng bài viết nhé có tất cả 5 câu ah ĐỀ BÀI : FINISH EACH OF THE FOLLOWING SENTENCES IN SUCH A WAY THAT IT IS AS SIMILAR AS POSIBLE IN MEANING TO THE ORIGINAL SENTENCES. USE THE WORDS GIVEN AND OTHER WORDS AS NECESSARY. DO NOT CHANGE THE FORM OF THE GIVEN WORDS *EXAM : 0. There are 5 room in our house HAS ---> Our house HAS 5 room. Làm ơn cứu giúp em ạ T>T

1) Cho tan = 5/12.Tính sin,cos 2) Cho hình thang vuông ABCD (A=D=90 độ),biết AB<CD Chứng minh rằng: Cos C = (CD - AB)/BC

viết câu chuyển ý để nêu biểu hiện của bạo lực gia đình (Bỏ câu Vậy biểu hiện của bạo lực gđ là gì đi nhé mình viết rồi )

Dựa vào dàn ý viết một đoạn cho đề:Kể lại những kỉ niệm ngày đầu tiên đi học. Ko chép mạng nếu chép mạng sẽ báo cáo vi phạm Đây là văn tự sự kết hợp miêu tả biểu cảm nha Viết 1 đoạn trong dàn ý thôi nha đừng viết nguyên bài văn nha

Cho nguyên tố K (Z=19), Ca (Z=20), Al (Z=13), P (Z=15), S(Z=16), Br(Z=35), hãy nêu tính chất hóa học cơ bản của các nguyên tố đó theo các thông tin sau: - Là kim loại hay phi kim? - Hóa trị cao nhất với Oxi?, Hóa trị trong hợp chất với H? - Công thức oxit cao nhất? Công thức hiđroxit? Chúng có tính axit hay bazơ? - Công thức hợp chất với H, chúng tồn tại ở trạng thái gì? ( rắn, lỏng hay khí).

8, The children didn’t go to school because the weather was too much snowy => If 9, He died so young; otherwise, he would be a famous musician by now. => ……………………………………………………………………………… . 10, The car broke down so often because you didn’t take good care of it. => If……………………………………………………………………………… 11, He was very bad-tempered, that’s why his wife left him soon after marriage. => If he………………………………………………………………………………: 12, We got lost because we didn’t have a map. → If …………………………………….……..…….…… 13, Susan felt sick because she ate four cream cakes. →If……………………………………………..…… 14, He lost his job because he was late every day. →………………………………………………...…… 15, Robert got a bad cough because he started smoking cigarettes. →………………………………..….. 16, He couldn’t go out because he had to study for his exam.=> If………………………………………… 17, She wass lazy so she couldn’t pass the exam.-> If…………………………………………… 18, He would pay me tonight; I had enough money to buy a car.=> If…………………………………… 19, He smoked too much; that’s why he couldn’t get rid of his cough.=> If……………………………….. 20, She was very shy, so she didn’tn’t enjoy the party.=> If…………………………………………….. 21, I didn’t eat lunch, I feel hungry now.=> If I…………..…………………………………. 22, It didn’t rained, we would have a better crop.=> If……….…………………………………… 23, He didn’t revise all his lessons, he failed the exam.=> If he………………………………………….. 24, His sister sent her money, so he continued to study.=> if …………………………………………… B. Complete each of the following sentences so that it means the same as the sentence before i.t 1. He doesn’t see the signal so he doesn’t stop his car->If he …………………………………………… 2. Peter gets bad marks because he doesn’t prepare his lessons well  If Peter ……………………………………………………………… 3. Mary doesn’t have enough money. She can’t buy a new car.  If Mary ……………………………………………………………… 4. Go right now or you’ll be late for the train .-> If you……………………………………………… 5. He doesn’t apply for the job because he doesn’t have enough qualifications.  If he …………………………………………………………………. 6. Hurry up, or we will be late for the exam.  If we ………………………………………………………………… 7. They do not understand you because you do not often talk to them.  If you ………………………………………………………………… 8. Because you speak English unnaturally, they do not understand you. If you ………………………………………………………………… nda can’t do her homework unless she is free.................................................................................. 18, Richard played piano well, so everyone clapped their Ex 8. Write the correct form of the words given in capital letters: 1. The most popular............................ at recess is talking. ACT 2. Hoa is having a ............................. check-up. MEDICINE 3. The nurse wanted to know Nga’s height and ................. WEIGH 4. Edison’s most famous............................was thethe electronic bulb. INVENT 5.This dictionary is very .................... for you to learn English. USE 6. We must remember to eat…………………………….. SENSE 7. then, Hoa …………………………….a pan and stir- fried the beef HOT 8. Mr. Hung has a very……………………tooth PAIN 9 .She spent her….........................…..in the country. CHILD 10. The president is going to make a ……............…tonight SPEAK Ex 9.Complete the following sentences with the correct form of the verb in the brackets . 1. You ( go )......................out last night? – Yes. I ( go ) ...................to the cinema but I ( not enjoy )…………….... the movie very much. 2. It often ( take).................... me twenty minutes ( go )....................to school. How long it ( take )........................ you , Linh? 3. My sister ( go)...... ............... to the Youth club every weekend. She enjoys ( play )............... sports very much. 4. Be quiet! I ( want )...................... to hear the news. 5. My father ( play ) roller- skating when he ( be).................... a child. giúp mình với mình vote 5* và cảm ơn đầy đủ

Unscramble these sentences. Pay attention to capitalization and punctuation. Lm giúp mik với mik cần gấp

Ai giúp em được không ạ. Em cảm ơn nhiều , em đang gấp lắm ạ