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英語 高校生

4の解き方がわかりません。 例えば(a)で、続く文であくびを謝っていることも全て把握した上で、挨拶なのでpolitelyかと考えたのですが、なぜ誤りなのか教えていただきたいです。

13 Lucy is a British schoolgirl who lives in Oxford. She is talking to her father, Fred, in the kitchen of their home. Read the conversation below and answer the following questions. Lucy: (a) Good morning, Dad. Oh, sorry for yawning. What are you doing with that microwave oven? It looks heavy. Do you need a hand with moving it? Fred: I think I'll be OK, Lucy. I'm just going to put it in the car and take it to the city dump. Lucy: Couldn't you send it away to be repaired? Fred: It's ten years old and well out of warranty now, so I very much doubt that the manufacturer would do it. They probably don't even carry the spare parts anymore. Lucy: That's a shame. Oh, I know what! Why not take it to the Repair Café near my school? Fred: What's that? I've never heard of it. Lucy: It's brilliant! We visited it as part of our environmental science course recently. It's a meeting place where people can get together to mend broken items cooperatively. And have a chat and a cup of coffee! Fred: I'm all ears. Tell me more. Lucy: Well, the first Repair Café was started by a Dutch woman called Martine Postma in Amsterdam in 2009. (1) 彼女は,使い捨て文化で環境が破壊されて, ゴミの量が地球規模で増えることを心配してたん . She wanted to find a local solution to this global problem. Fred: That's what they call "thinking globally, acting locally," isn't it? Lucy: Exactly. She also wanted to address the decline in community spirit amongst urban dwellers and do something about people's loss of practical skills and ingenuity. Fred: And the idea (2) caught on? Lucy: Very much so. The concept has grown into a global movement. The one in Oxford started about four years ago. Fred: Impressive! What kind of things do they repair? Lucy: Oh, all sorts. Electrical appliances, clothes, furniture, crockery, bicycles, and even toys. Fred: How successful are they at repairing things? Lucy: Well, of course, they cannot guarantee to fix every item brought to them, but they have a fairly good success rate. One study found that on average 60 to 70 percent of items were repaired. The rate is higher for some items such as bicycles and clothes but lower for things like laptop computers. Fred: I can understand that. Just between you and me, I think some electronics manufacturers deliberately make products in such a way that you cannot disassemble them and repair them unless you have specialized tools and equipment. Lucy: Yes, and that's where Repair Cafés can help. But these cafés are not just about repairing things for people. They are places where we can meet others, share ideas, and be inspired. The volunteer repairers are very keen to involve the visitors in thinking about the repair and actually carrying out the repair themselves. They also encourage people to think about living together in more sustainable communities. Fred: I suppose you could say they are about repairing our minds, not just our things. Lucy: Quite so, although often the two are very closely related. Many people attach (3)sentimental value to old things that might, for example, be part of their family history. Fred: I see what you mean. It almost sounds too good to be true. (a)Is there a catch? For example, how much does it cost? Lucy: Advice and help from the repairers is free, but people who use the café are invited to make a donation. That money is used to cover the costs involved in running the café. If specific spare parts are needed, the repairers will advise you on how to obtain them. Fred: Well, that's marvelous! (e)Then I'll take this old microwave there. Are they open today? Lucy: Yes, and I'll come with you. I've got a pair of jeans that are badly in need of some attention. QUESTIONS 1. Translate the underlined part after (1) into English. 2. What does the underlined phrase after (2) mean? Select the most appropriate expression from the list below. (A) became popular (B) hit a dead end (C) occurred to you (D) played a significant role (E) worked in practice 3. The underlined phrase after (3) means the value of an object which is derived from personal or emotional association rather than its material worth. Give ONE object that has "sentimental value" for you and explain why it has such value. Your answer should be between 15 and 20 English words in length. (Indicate the number of words you have written at the end of your answer.)

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英語 高校生

間違えてるところあったら教えてください🙇‍♀️

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数学 高校生

赤線部分が分かりません。解答部分の2行目から赤線にはどうやってなったのでしょうか?また、なぜ4行目から「したがって、b^2=c^2...」となったのでしょうか?

3 7 C N 79 三角形の形状決定 次の等式が成りたつとき, △ABCはどのような三角形か. (asin A+bsinB=csinC (2) acos A+ bcos B=ccos C 精講 ? 解 答 (1) 外接円の半径をRとすると, 正弦定理より, a² 62 C2 + 2R 2R 2R a²+ b² = c² c よって, ABを斜辺とする直角三角形. ZR, 注単に「直角三角形」 ではいけません. どこが斜辺か, あるいは直角 かをつけ加えなければなりません。 cosA=b²+c²-a² 2bc (2) 余弦定理より a(b²+c²-a²)_ b(c²+ a²−b²) _c(a²+b²−c²) 2bc 2ab 三角形の形状を決定するときは,正弦定理, 余弦定理を用いて, 辺だけの関係式 にします. = ポイント 演習問題 79 Sint -9 133 Sindは正弦定理 CosDは余弦定理を用いる。 SMB-66 2ca a²(b²+c²-a²)+ b²(c²+ a²-b²)=c²(a²+ b²-c²) Sa+=(a²-2a²b²+b^)=0 :: c²-(a²-6²)²=0 2R, Sin C = C 2k 2 re 両辺に2abcをかける :: (c²+a²-b²)(c²-a²+b²)=0 したがって, b2=c'+α² または d²=62+c² よって, AC または BC のいずれかを斜辺とする直角三角形. 第4章 三角形の形状決定は,正弦定理、余弦定理を用いて辺 と角の混合型を辺だけの関係式になおす △ABCにおいて, btan A=atan B が成りたっていると の三角形はどのような三角形か. { [ け

解決済み 回答数: 2