(2)なのですが√5分の1がどこから出てきたのかわからないので教えていただきたいです

[326改訂版 高等学校 数学B 練習23] 次の問いに答えよ。 (1) でないベクトルa=(4,, a)とb=(a2, -a)は垂直であることを示せ。 (2) (1)を用いて, a=(1, 2) に垂直な単位ベクトルeを求めよ。 (解説) a·b=aaz+a (-a))=a ja2-a za」=0 4」キ0またはazキ0であるから +0, ō+0 よって,ベクトルa=(a ,, a)と5=(a g -a)は垂直である。 (2) 6=(2, -1)はaに垂直である。 |=V2°+(-1) = V5 1 1 または = V5 であるから e = -b V5 (学)(学-)- 2 2 1 よって 5 V5 V5

(2)なんですけど、なぜ√5分の1になるのか教えて頂きたいです！

[326改訂版 高等学校 数学B 練習23] 次の問いに答えよ。 (1) でないベクトルa=(4,, a)とb=(a2, -a)は垂直であることを示せ。 (2) (1)を用いて, a=(1, 2) に垂直な単位ベクトルeを求めよ。 (解説) a·b=aaz+a (-a))=a ja2-a za」=0 4」キ0またはazキ0であるから +0, ō+0 よって,ベクトルa=(a ,, a)と5=(a g -a)は垂直である。 (2) 6=(2, -1)はaに垂直である。 |=V2°+(-1) = V5 1 1 または = V5 であるから e = -b V5 (学)(学-)- 2 2 1 よって 5 V5 V5

ここの問題の答え全てわかる方いますか？

READING 34点 monitovb/ VARIOUS QUESTIONS 12点 100点 Wait 8 18点 LISTENING 全文回隠 パート ごとの 音声 の 音声 回 1 34点 READING - 1 Did you know that there are plants that eat insects? They are called carnivoronst plants, and one of the most famous of these plants is the Venus flytrap, name, flytrap, since it traps* flies and eats them. It also eats insects, such as beetleの* |grasshoppers* ana。 52 The Venus flytrap grows naturally only in North Carolina and South Carolina in the United States, where the soil is fairly poor in nutrients*. The plants there cannot get enough nutrients from the soil, and as a result, Venus flytraps have evolved to get additional nutrients by eating insects. ような植物なのでしょうか。 It got its moths*. 2-242- O3 You may wonder how the Venus flytrap is able to eat insects. The Venus flytrap is a very small 10 plant with strangely shaped leaves, each of which looks like a mouth with sharp teeth. Inside the leaves, there are very sensitive hairs. The Venus flytrap waits with its leaves open until an insect 15 flies in and touches these hairs. And the moment anything touches them, the leaves close very quickly and trap the insect. Surprisingly, they close in only 0.5 seconds! O4 After the Venus flytrap catches an insect, the leaves start to digest* it. It takes about ten days to get nutrients from the insect. Then the leaves open again. in the leaves is the outside of the insect. This is because the outside parts of insects are The only thing left too hard for Venus flytraps to digest. They are removed from the leaves by rain or wind. And again this insect-eating plant just waits for another insect to fly into its trap. (263 words) (注)carnivorous : 食虫の trap:動他…をわなで捕まえる 名わな beetle:名甲虫(カブトムシなど) grasshopper:名バッタ digest:動 他…を消化する nend moth:名ガ nutrient:名栄養 (分) 家説明文の構造に注目する ある物について説明する場合, 物の名前とその名前の意味·由来→基本的な性質→具体的な特徴についての解説, とい う順に話を展開していくとわかりやすい。 rola 本文の4つの段落を, 〈名前の意味·由来〉), 〈基本的な性質〉, <具体的な特徴〉の3つのパートに分けて, 各パートの左の余白に書きなさい。

わからないので教えてください

Alex: Hi, 'm Alex. I graduated from college three years ago. At first I had my own apartment. The rent was more than $1000 a month and it increased after a year. It was really difficult because I didn't have a lot of money. On top of that, I couldn't finda job. My mother told me not to give up. But it's not so easy. When my mom was young, she graduated from college and found a job pretty quickly. Now more people go to college, and there is more competition for jobs. It's a lot harder. Two years agol had to move back in with my parents. I'm still living with them now. At first it was strange, but then I got Used to it. After a while I got a part-time job. It pays pretty well, so l am able to save two-thirds of my salary. I don't have to pay rent, so that makes it easier. Next year l'm going to move out and find a roommate. That way we can share the rent, so it will be easier. As for work well, I'm still not sure. I'm going to keep looking for a full-time job and hope that I can find one.

分からないので教えてください

Notice how we say fractions in Enalish: 1/2 = one halh 1 1/4 = one quarter 1/3 %=D one third 2/3 = two thirds In the future Now Before going to find a lives at Living situation lived in an _2pertment. going to rent the more than_$ l000 month a Rent didn't have a lot. .of his saves Money of money salary wants to find a Work couldn't find _a dob works _job

chapter5part4 映ってる問題教えてください

The History of Ice Cream. CHAPTER 5 の Focus on Contents One More Step ( )内に語を入れ,表を完成しなさい。 Fill in the blanks to complete the chart. の四1 True or False? not teup adh tewnc bns 1. T IFJ At the St. Louis World's (OFai ) in 1904 2. T / F) 3. T/ F I'm selling (Oweffles). pl emooedo ) I'm selling ice cream. I sell ice cream in a (② l) I'm running (3 ouT )of dishes. Oh, you are in trouble. ho9 Use my waffles and mooned Reading Skill (6Wrop ) the ice cream. omuonn ー 2行目のa very important development とは具体 的には何のことですか。 一 Ernest. 2次の問いに答えなさい。 S Answer the questions. T m91 90i ol svol sdT OWhat was an important development in the history of mgolovob erf TO ice cream? hiae のWhat did Mr. Hamwi do for the man selling ice cream at the World's Fair? 3What should we do to add an exciting flavor to ice lom oi gnio cream? bne yismmus ot go ms e Focus on Grammar He (ice cre 19bt 9t made agirl singing a. song 2録り上 分詞の後置修飾(現在介詞)「~している」 名詞+現在介詞+語(句) (後置)2語以上で名詞を修飾 c ad cf. 現在分詞+%詞(前置)現在分詞1語で名詞を修飾 b a singing girl 1銭 9dt The man selling ice cream ran out of dishes . 名詞 現在分詞 2話以上 VOU DeTngvmi 9Vsd 3 」の部分を説明している語句に下線を引き,日本語にしなさい。 b9aualsastnsnott brother. my What do you think? OThe boy| taking a picture over there is ●Some people are not OWho is the girl playing the guitar with Takashi? afraid of eating new and unusual foods. Are you an adventurous eater? The printer making a strange noise is broken. 67 Chapter 5

これ教えてください🙏🏻

口261 I want to visit a friend ( ) lives in Los Angeles. ③ whoseigの whomhg bo adw () Dwhich gi vliso ong bo 2 who modw く千葉科学大> 口262 The man ()I thought was my friend turned out to be a complete stranger. bire ③ whom e-o 1what 2 who doidw ) 4) which く国士舘大> 28 () った。 口263 The professor recommended a book ()I found very interesting. 1 where (3 what 1dy 2 which 4 whom aiw く濁協大> 1dy

これ教えてください🙏🏻💧

口261 I want to visit a friend( )lives in Los Angeles. vho vlis whoseoigro 29hg bop modw のwhich 4 whom dofw く千葉科学大> Tedw () 口262 The man ( )I thought was my friend turned out to bea complete stranger. biro! ud which 1 what al m d 2 who doitw 3 whom 1adw (E く国土舘大> 28 () だった。 大大会大> とも小説 )I found very interesting. 5lgmoo 口263 The professor recommended a book ( Tnoa 3) what mds 15gl 4 whom く濁協大 Jedw () ahss 1 where ②which <大 dw doidw

36,37,38の答えが分かりません。 どなたか教えていただけませんか？

asked strange questions so that the answers would sound funny and make them smile. that answer was true or not. Later in the interview, the volunteers were deliberately In the study, the scientists conducted interviews with volunteers. The volunteers recent study by scientists at the University of Portsmouth has shown that people can When people communicate face to face, they do not just communicate by speaking language. There are other factors involved, such as gestures. If the person you are tell if a speaker is smiling or not even without seeing their face but just by listening were asked to answer all questions with “I do in the summer,” regardless of whether talking to frowns, you know that he or she is unhappy. Whena person laughs during a conversation, you can tell that that person thought something was funny. However, a The interviews were videotaped with the purpose of gathering samples of different C 35) Smiling from Ear to Ear to their voice. of smiles. The scientists then analyzed the smiles. types According to the scientists, there are as many as 50 different kinds of smiles. T he researchers then had different group of volunteers listen to the audio portion of the recordings. This group of volunteers could tell what kind of smile the speaker had on his or her face by just hearing their voice. This indicated to the scientists that the voice has characteristics that communicate feelings and that people can interpret them. Another study also suggests that customer satisfaction is closely related to friendliness. As we all know, the best way to show friendliness is to smile. Researchers think that using the smiling voices in products or services effectively, Such as answering systems and computer programs, can contribute to better customer service. This can also be applied to hiring and training staff. Since people can tell ifa smile is real or not by a person's facial expression, and it has been proven that people, for example, customers can tell if a staff member's smile is real or not just by listening, then smiling not only from the bottom of your heart, but with your voice may be a g0od way to improve business.

答え教えてください🙏🙏

日記文)和明はインターネット上のブログに英文日記をつけています。 この日はどんな出米事7 たのでしょうか。 This afternoon my fathertook me to a huge bookstore, which opened last Sunday. It is the biggest bookstore in my city. When I went in, I had the impression that I had walked into the national library. I was surprised to see so many books all well-arranged in one place, ranging from stories for children to books on specialized subjects. In addition, I found it quite useful to do a search of books online. The titles of all the books in the store were digitalized. We were very impressed with the quality of the store and quantity of the books. This bookstore was like a first-rate public library: a source of information and knowledge about the world.