Đáp án:
Giải thích các bước giải:
Nửa chu vi mảnh đất là:
50:2=25 (m)
Chiều rộng:
25:5x2=10 (m)
Chiều dài:
25-10=15 (m)
Diện tích mảnh đất hình chữ nhật là:
15x10=150 (m²)
Chúc bạn học tốt ^^
Gọi chiều dài là a⇒ chiều rộng là a.$\frac{3}{2}$
Ta có: chu vi= 2(a+a.$\frac{3}{2}$ )
= 2.a.$\frac{5}{2}$
= a.5=50(m)
⇒ a= 10(m)
diện tích hình chữ nhật = a.a. $\frac{3}{2}$ = 10.10 .$\frac{3}{2}$ = 150(m²)
Lập dàn ý chi tiết đề văn “ Hãy tưởng tượng và miêu tả chân dung bé Kiều Phương theo hình dung của con ” từ bài học trên truyền hình sáng ngày 21.3.2020
D=1 ² -2 ² +3 ² -4 ²+...+99 ² _ 100 ² +101 ²
Hãy điền vào chỗ trống giúp mình nha
Bài 4. Em hãy kể 5 thành ngữ( hoặc ca dao, tục ngữ) có sử dụng phép sosánh. Bài 5. Nói về thiếu niên, nhi đồng, Bác Hồ viết: Trẻ em như.búp trên cành. a) Phép so sánh này bị lược yếu tố nào ? b) Yếu tố bị lược có thể được thay bằng những từ ngữ nào trong các từ ngữ sau đây : tươi non, quyến rũ, đầy hứa hẹn, đấng trân trọng, chứa chan hi vọng, đầy sức sống, yếu ớt đáng thương, nhỏ nhắn, chưa đáng chú ỷ. Bài 6. Phép so sánh sau đây có gì đặc biệt: Mẹ già như chuối ba hương Như xôi nếp một, như đường mía lau. (Ca dao)
Complete the sentences with the correct form of “used to” and the verb in bracket. 1. .....................(you/ enjoy) maths at school? 2. I .............(not like) flying, but I love it now. 3. We.............(be) friends, but we don’t get on now. 4. ........................(John/ work) for IBM before he came here? 5. Winters .................(not/ be) as cold as they are now. 6. She ....................(live) with her mother, but now she lives with her father. 7. I ...........................(not do) any exercise. 8. ...................(he/ play) for Manchester United?
giúp mình với nêu những thành tựu và khó khăn của nước ta trong thời kì đỏi mới lấy dẫn chứng
CÂU 1: Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions: She is very good at knitting. She __________ herself this sweater. It looks very nice. A: knits B: knitted C: is knitting D: knit CÂU 2: Mark letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to the original sentence in each of the following questions. The children are eager to visit Hue next week. A: The children are looking up to visiting Hue next week. B: The children are looking forward to visit Hue next week. C: The children are looking up to visit Hue next week. D: The children are looking forward to visiting Hue next week. CÂU 3: Mark the letter A, B, C or D on your answer sheet to indicate the meaningful sentence from the cues given. These/ baskets/ make/ thin/ bamboo/ strips. A: These baskets were made in thin bamboo strips. B: These baskets are made with thin bamboo strips. C: These baskets are made of thin bamboo strips. D: These baskets were made by thin bamboo strips. CÂU 4: Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. . A: I’d like to try this conical hat, please. B: _____________ A: It’s not very expensive. B: It takes time to make it. C: This can be a souvenir. D: Sure. Put it on. CÂU 5: Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions. A: decision B: helpline C: advice D: delighted CÂU 6: Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions . A: friendship B: encourage C: medicine D: graduate CÂU 7: Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. . A: What a beautiful painting! – B: ______________ A: I bought it in a souvenir shop. B: You’re welcome. C: I’m glad to tell you so. D: I don’t mind if you say that. CÂU 8: Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions: Since changing the way of production, many craftsmen have voluntarily joined together to for ___________ . A: cooperatives B: cooperative C: cooperates D: cooperation CÂU 9: Mark letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to the original sentence in each of the following questions. When she was a student, she did not have a good relationship with her classmates. A: When she was a student, she got on well her classmates. B: When she was a student, she got on with her classmates. C: When she was a student, she didn’t get on well her classmates. D: When she was a student, she didn’t get on well with her classmates. CÂU 10: Mark the letter A, B, C or D on your answer sheet to indicate the meaningful sentence from the cues given. Last weekend/ I/ go/ Van Phuc village/ buy/ nice/ silk scarf/ mother. A: Last week I went to Van Phuc village to buy nice silk scarf for my mother. B: Last week I went to Van Phuc village to buy nice silk scarf to my mother. C: Last week I went to Van Phuc village and buy a nice silk scarf to my mother. D: Last week I went to Van Phuc village and bought a nice silk scarf for my mother.
Mk bt nó sai nhưng ko bt giải thích
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