Grade

Type of questions

Mathematics Junior High

問3の(2)でマーカーついてるところの式の意味が分かりません😖教えてください🙇🏻‍♀️⸒⸒

3 下の図のように、関数y=x2......( of 次の会話文は数学の授業の一場面です。 先生 太郎さん 「yの変域は 先生 先生 JOCIA OD JANEI のグラフがあります。 点Oは原点とします。 y O 次の問いに答えなさい。 (配点16) y=x² A(t, t') (t+2(+2) (tt), (ttl)" x ) 「今日は放物線上の3点を頂点とした三角形について学びましょう。その前にまず は練習問題です。 上の図の関数y=xについて, x の変域が-3≦x≦2のときのy の変域を求めてみましょう。」 です。 「正解です。 それでは,今日の課題です。」 課題 0 ≤ y = 9 SAN O BA OSE 関数y=xのグラフ上に次のように3点A,B, C をとるとき, △ABCの 面積を求めなさい。 点Bのx座標は点Aのx座標よりだけ大きい。」 点Cのx座標は点Bのx座標より1だけ大きい。 Sma 「たとえば,点Aのx座標が1のとき, 点Bのx座標は 2, 点Cのx座標は3です 「ね。」 太郎さん 「それでは私は点Aのx座標が-1のときを考えてみよう。 このときの点Cの座標 だから・・・ △ABCの面積が出ました。」 は イ 花子さん「私は,直線ABがx軸と平行になるときを考えてみるね。 このときの点Cの座標 は ウ だから... 私も△ABCの面積が出せました。」 先生 「お互いの答えを確認してみましょう。」 -0.5 太郎さん 「答えが同じだね。」 0.5 1.5 花子さん 「点Aのx座標がどのような値でも同じ面積になるのかな。」 太郎さん「でも三角形の形は違うよ。 たまたまじゃないのかな。」 先生 「それでは,同じ面積になるか, まずは点Aのx座標が正のときについて考えてみ ましょう点のx座標をとおいてABCの面積を求めてみてください」 ABC

Solved Answers: 1
English Senior High

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.)

Solved Answers: 1