この問題の解答の赤いところについてで、式変形は分かるのですが、何故これをしようと思うのか、また、なぜこれでBEベクトルが求められると分かるのかが分からないです。教えてくださいm(_ _)m

解 169. X 座標空間において, 原点を中心とし半径が√5の球面をSとする。 点A(1, 1, 1) か らベクトル = 0, 1, -1) と同じ向きに出た光線が球面Sに点Bで当たり 反射して 球面Sの点Cに到達したとする。ただし反射光は,点0, A, B が定める平面上を, 直線 OB が∠ABC を二等分するように進むものとする。 点Cの座標を求めよ。 [20 早稲田大 教育]

17がなぜCか教えてください🙇‍♀️

次のニュ 適切な語句を選びな cost of the robot TFC 駅 it for new robe Chinese company builds a factory in U.S. Tianjin Fiber Co. Ltd. (TFC), a Chinese manufacturer of chemical fibers, goue Vita how decided to build a factory in South Carolina. The company said the 3334 18. 17. manufacturing cost in China is the main reason for this outsourcing. alejdo The manufacturing cost in China, including land, energy, bank loans, and taxes, has exceeded the U.S. in some industries. erit bns i rzug aut. ameldong 19. noo etom eve evom todo 17. (A) is robot broke duri (B) are (C) has (D) have 18. (A) increase (B) increasing (C) decrease bos aritmom &t (D) decreasing bemut al es ew lud aysb wet a taul yd v ob of biota tonnes ow ABCD ABCD enama bnse of joy of aldiazoq il al 19. (A) Tianjin Fiber Co. Ltd. is an exception. (B) Tianjin Fiber Co. Ltd. is just one example. (C) Tianjin City is located in North China. (D) There are many sightseeing spots in Tianjin City.doR AO jodoff-x ne riliw alduoit ABCD dodof-x quoy to quot gnieu need overi W jon egnente a eslam meril to eno tari bruot to met sitt babesoxe earl todos erit tert nl beetnsoup vllut ed lliw i eqori viassonia Bill toortiw lege Toy of il bres D

19番です。なぜDか教えてください。

Eile Edit View Insert Tools Message Help 晶 send cut copy paste undo attatck From Emily Brown Co. To Sara Johnson Subject: Order not received I ordered a woman's jacket from your mail order catalogue a month ago, but The catalogue says any order 17. through the Internet will be 18. shipped within seven days. On June 1, 20XX, I found that the money girls U 19. from my credit card account. Could you check where my order is now and let me know as soon as possible? The Item I ordered: A woman's white linen jacket Order Confirmation Number: 048392LJ Order Date: May 5, 20XX bno fuo inert arit pribree (A) I found it is too big for me (B) it has not arrived yet (C) I'm sorry it is out of stock (D) the jacket is too expensive zidT (8) YO) d yea ABCD A) place B) placed 19. (A) has already taken (B) already took (C) had already taken (D) had already been taken dow eid ai od os sigo (A) 059 ( ABCD (A) (B) Juda meal um

赤線部のtoはどのような用法になっていますでしょうか🙏

Q3. Choose the most suitable answer from those below to complete the following sentence. Keith Payne suggests that we are mistaken to think that ①data regarding matters of inequality accurately reflects the true situation. earning the minimum wage will strengthen family relationships. humans can best be described as social creatures. 4 poverty is the reason for the weakening of social ties. ⑤the disadvantage of being poor changes our perception of the value of food.

最後の文のthan以下increasedの働きと訳し方どうするんですかね文構造わからなくて、、 いちいち丁寧に文構造取らずに、これは適当に訳していいんでしょうか

Point- 第5章 52 精講 比較対象の把握④ 問題 別冊 57 ページ ※ more than ○○は、○○を含まない more (For more than 50 years), sthe health of American astronauts has been ca concern (of NASA - the National Aeronautics and Space Administration) NASA does not let othe risk of cancer V (for its astronauts) (v) rise more than three percent (during their lifetime)). But there vis smore (to be worried about) (than a possible increased risk of cancer). 1 なぜhas been になっている? [動 現在完了の意味は,主に同じ文中にある副詞によって決まります。 本文では。 期間を示す副詞句(For more than 50 years)があるため、 「継続」 の気持ちを 表すため現在完了だとわかります。例えば「私は

この、only withのところは初めてと訳すんですか？ 訳し方がよく分からなくて教えて欲しいです🙇🏻‍♀️՞

例題 44 Historians have described how life periods became demar- S 'S' V cated (in Western societies over the past centuries. Only with industrialization and the appearance of a middle class and formally organized schools did childhood become a clearly definable period of time.) 読解プロセス S (E) demarcate: to mark by bounds; to draw the line <群馬大>

教えてください。よろしくお願いします🙇

1.次の日本語に合うように、( )に適当な1語を入れなさい。 (1) 当地の気候はあなたの町の気候に似ています。 The climate here is like ( (2) 彼女の目はヒョウの目のようだ。 Her eyes are like ( (3) 賛成の人、挙手してください。 ( )( )( ( ) your town. ) a leopard. ) agree, raise your hands. (4) 私たちはその岩を移動させることは不可能だとわかった. We found ( ) impossible ( (5) 私は靴を修理するのに 5,000円かかりました。 ( ) ( ) move the rock, ) me five thousand yen to have my shoes repaired. (6)君はここに署名しさえすればよい。 ( ) you have ( )( ) is sign your name here.

1枚目が本文です。 2枚目の最後のところには何が当てはまりますか？

本のを A B 純が読んでいた本の続きです。 私たちができるエシカルな取り組みとはどんなことでしょうか。 さらに やさしい Moreover, ethical fashion companies are friendly to their 衣料品工場 労働者 発展途上国では よく 働 厳しい 状況 workers. In developing countries, people at clothing factories 低賃金 長時間労働 often work in severe conditions. Low wages and long working 業 大きな問題 ヨン hours have been a big problem in the fashion industry. そのような条件 時々 子どもでさえ 働かなければならない Sometimes even children have to work in those conditions. この Ethical fashion companies have been trying to change this 状況川チュエーション 払う 変えようとしてきた 労働者に適正 賃金 禁止する 子どもの situation. They pay their workers fair wages and prohibit child 労働 ますます labor. Now, more and more clothing companies have become 責任をもつようになってきている 労働環境 労働者と responsible for their workers and their working conditions. ~とき 難しくない 買い物に行くとき ******* ****** 道徳的に正しく あること ファッションに関して 例えば It is not difficult to be ethical about fashion. For example, 注意深く決める when you go shopping, decide carefully what to buy. By で 動物 助けられる 何を買うか 労働者の生活 choosing ethical products, you can help the workers' lives and 守 地球 protect animals and the planet. 10 M Child labor:

なぜこの文から「read」が過去形だと判断できるのでしょうか。 答えは②です。

190 Susan read the book (oo) worsnim) (東洋 基本 ①as carefully as she can 頻出 2 as carefully as she could 3 as she can as carefullybo4 as she could as carefully ( et) aid se bo 28

この問題ですがなぜ②ではだめなのでしょうか？

Point 053 162 The driver kept the engine ( elone ) while we waited. I run 2 to run 3 running 4 ran <日本大〉 163 cannot keen my eyes ( to his terrible situation.