a) xét Δ ABC có: AB²+AC²=BC²
lại có AB : AC = 3 : 4
=>AB/3=AC/4
=>AB²/3²=AC²/4²
=>AB²/9=AC²/16=AB²+AC²/25=BC²/25=30²/25=36
=>AB=18cm
AC=24cm
Trong ngôn ngữ lập trình Pascal, sau khi thực hiện đoạn chương trình sau, biến X có giá trị là gì? S := ‘Hoang Anh Tuan’ ; X := ‘ ’ ; i := length(S) ; while S[i] <> ‘ ’ do Begin X := X + S[i] ; i := i + 1 ; End ; Giải thích câu này giúp mình với ạ
Giúp em chọn đáp án đúng với ạ.
Bài 1. Put the verb in the blanket in correct form. 1. Where's John? He ________(listen) to a new CD in his room. 2. Don't forget to take your umbrella with you to London. You know it always ________ (rain) in England. 3. Jean ________(work) hard all day but she ________(not work) at the moment. 4. Look! That boy ________ (run) after the bus. He________(want) to catch it. 5. He ________(speak) German so well because he ________(come) from Germany. 6. Shh! The boss ________(come). We ________(meet) him in an hour and nothing is ready! 7. ________you usually ________(go) away for Christmas or________ you ________(stay) at home? 8. She ________(hold) some roses. They________(smell) lovely. 9. Oh no! Look! It ________(snow) again. It always________(snow) in this country. 10. Mary ________ (swim) very well, but she ________(not run) very fast. 11. ________ you ________(enjoy) this party? Yes, I ________(have) a great time! 12. Sorry I can't help you. I ________(not know) where she keeps her files. 13. What ________you________(do) next Saturday? Nothing special. I ________ (stay) at home. 14. I ________ (think) your new hat ________(look) nice on you. 15. I ________ (live) with my parents but right now I ________(stay) with some friends for a few days. Mn ghi đáp án hộ mình vs ạ? Đg gấp á?!
Trong 2 bức này m.n vẽ đc bức nào thì vẽ :))
Giải hộ với ạ (mong mn giải hộ với ạ)
mn giúp e câu 1 của phần làm văn với ạ em cảm ơn ạ
Điền các dấu( =,<,>) vào chỗ .... -6/11 + 5/-11.....-1 -5/16 + -3/16......-1/3 2/5......3/4+-1/6 5/6+ -2/3......1/12 + -4/5 -3/5 + 11/5.....-7/3+4/7 -7/11+-15/11.....-4/3+-7/5
lập PTTS và PTTQ của đường thẳng đi qua điểm M và có vtcp u biết a,M (1,-2) ; u = (1;0)
giúp mình với mình đang cần gấp ạ
Television is one of the greatest (1) inventions of human beings. Today we can find television almost everywhere in (2) the world. The first television was invented in 1927 by a 21 years old inventor – Philo Taylor Farnsworth. Watching television __________ (3) both recreational and informative. There are some news programs for adults _________ (4) information. There are also tutorial channels based on specific subjects for the students. ___________ (5), it’s harmful to spend too much time watching television. Some shows are too violent for the children to watch because they may imitate. 1. A. greater B. the greatest C. great D. greater than 2. A. of B. on C. in D. at 3. A. is B. are C. be D. am 4. A. to get B. getting C. get D. to be getting 5. A. Because B. Therefore C. But D. However
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