26の(4)についてです。 なぜ、CAベクトルとDCベクトルのなす角は45°ではなく135°なのですか？

(1) al=1, |6|=2, 0=45° ○*(2) àl=4, ||=2, 0=120° 26 1辺の長さが1である正方形 ABCD について, 次の内積を求めよ。 *(2) CB-DA (1) AB-BC (3) AD-AC *(4) CA-DC V2 (4) CA と DCのなす角は 90° + 45°-125° よって CA. DC=|CA||Dclcos 135" =\Zx1x(- 1 -1 2 eS 数学B II

写真の式をX＝に式を変形させるとどのような式になるか教えていただきたいです！

a-b。 I+8.49 : C 7) =D4 -3.29

答え教えて欲しいです🙇‍♀️ テストの対策プリントで答えがありません🥺💦

()に入る最も適切なものを選んで, 書きなさい。 Mother: Fred, breakfast is ready. Boy: OK.( [I like cooking. 2 Mother: Is the baseball game on Saturday, Jay? Boy:( [Here you are. 3 Sister: Let's go to the pool, Chris. Brother:( I have a lot of homework. [Sorry, I can't. 4 Teacher: Goodbye, Wendy. Have a nice weekend. Girl: Thank you, Mr. Baker.( [I know. Mother: Pete, do you like the blue shoes? Boy:( [Yes, I play volleyball. No, I like the red ones. 6 Student: When is the test, Mr. Potter? Teacher:( [I'ma math teacher. 2 11 I'm coming You're welcome. It's me.] )It starts at seven o'clock. That's right.] See you. It's fine, へ It's too small. We're at home. That's not yours.] You, too. Next time. To the sea.] 5 Yes, they're very easy. No, they're at school.] )Please study pages 22 to 28. Next Tuesday. Good morning.] See you soon. 3 日本文に合うように,()内を並べ替えなさい。 1夕飯前にはクッキーを食べないで。 before cookies] [eat Don't( dinner 2 エレン,お風呂の時間ですよ。 [for Ellen, ( it's time] your bath 3 職員室はどこですか。 [teacher's room is where the] 4 あれはケンの犬ではありません。 Ken's [is that] not ) dog.

至急です！！！〈高一英語〉 こちらの2ページの問題の答えを教えていただきたいです。テスト前なのですが、答えがついておらず、答え合わせが出来ないので…💧

17 EXERCISES O Choose the better option. 1) Don't drink coffee before you go to bed. You(won't /don't) sleep well. 3) I want to finish my homework quickly because(IIl / I'm going to) watch a movie tonight. 4) Oh, I left my wallet at home. Well, don't worry. 2) If we start now,(well be / we're) in time for the party. 参 p63 ro Faih (IIl/ I'm going to) lend you some money. 時の表 fee 26 5) Are you free this Sunday? - Sorry. (TIll/ I'm going to) visit my grandma. omo 2 Choose the better option. how」 fnis 1) Don't be late. The concert(starts / start)at six. shortly 「まもなく」 きっと)そう 3) We (flew/were flying) to Sapporo at ten, but our flight was canceled. 4) Ill text* you when I (arrive / will arrive) at the station. 2) Please wait here. Professor Johnson (comes / is coming) shortly*. tomoror text「~にメッセージを送る」 O 9oiy y 5) Usually (I stay / Ill stay) home on Sundays, but tomorrow(I go / Im going) out.> 3 Correct the underlined parts if necessary. Drawa circle “O" if it's correct. 1) The sun is shining. The clothes dry soon. 参 tee p.64 て eb-usimoy bateiv av T L。 20 2) I1l return this book when I'll see you next time. 29 Sorry, but I'm meeting Sally. 3) Can you come on Saturday evening? (4) Can we meet after three? Il study until then. 5) Will you be using your dictionary in the third period today? 一 No. borrow it? Do you want to la noed evast ahs ot needauj esil syA Lit 着目) Put the Japanese sentences into Enalish. d upro ahal at neod and ayA 1)次の列車は5番ホームに到着します。 -ce 66 at platform 5. (wear ~ to ) 30 1 mwonl 2)君は来週のパーティーには何を着て行くの? I uce MS to the party next week? 31 uoY (present) 3)旅行楽しんできてね。 一ありがとう。 お土産, 買ってくるね。iv Thank you. Enjoy your trip. 4)明日の今ごろは,ぼくは試験を受けているなあ。 nonl (cherry blossoms) pnol 5)もし来月あなたがここに来たら,きれいな桜を見られますよ。 ta ny Give It a Try Complete the sentences. 1) I'm gaining weight*. From tomorrow, Ill gain weight 「体重が増える」 tomorrow? 2) No, I'm staying home. I have a lot of homework to do. around six this evening? e 3) What IIl be having my piano lesson then. 4) What are you doing this weekend?

(2)h1:h2を求めれば解けるのは分かるんですけど、=OE:PEになるの訳が分かりません！！

434 (1) 平面の場合(基本例題 26)と同様に, 内分点, 外分点の公式にあてはまるよ (2) 四面体 OABC, PABCの体積をそれぞれ Vi, Vzとするとき、V、:v, D.423 基本事項1、基本6 重要例題 62 ベク (1) 点Pはどのような位置にあるか。 を求めよ。 CHARTOSOLUTION ベクトルの等式から位置を求める問題 内分点, 外分点の公式にあてはめる …… うにベクトルの等式を変形する。 (2) 底面△ABCが共通であるから,高さの比から求める。 解答 (1) 100F+5A+9BP+8CF=0から 100F+5(OF-OA)+9(OF-OB)+8(OF-OC)=0 + 320P=50A+9OB+80C ゆえに OF= 1 -(50A+90B+80C) よって A E5 線分BC を8:9 に内分する点をDとすると OF-(60A +17×90B土80C)-( (50A+170D)d.+d= B inf. (1) 答えの表し方 1通りではない。(*)を 下のように変形して位置 求めてもよい。面平 線分 ABを9:5 に内 50A+17× 32 32 線分 AD を17:5 に内分する点をEとすると OF= 32 1 50A+170D_1l oE ×22× 22 205a16 内間空 したがって,点Pは, 線分 BCを8:9 に内分する点を D, 線分 AD を 17:5 に内分する点をEとすると,線分 OE を 11:5 に内分する点である。 (2) 四面体 OABC の底面を△ABC, 高さをh,四面体PABCの底面 を△ABC, 高さを hとすると る点をFとすると OF-1 (140F+8C | 32 線分FCを8:14 する点をGとすると 36 P5 -C OP=×220G- 0 32 Vi: V2=h」:h2=OE: PE A The このとき,点Gと左 の点Eは一致する。 ゆえに,(1)から V:V2=16:5 B (面) ぶ u ) (特楽共るは 2

英語の問題です。 答え教えてください よろしくお願いします

. that Anna Harris has agreed to be our new chief designer. Questions 5 through 8 refer to the following e-mail. TO |All design team staff FROM Ray Brown 54問)。具 -1つの文書 -2つの文書 3つの文書 1つの文書、 |April 2 New chief designer DATE SUBJECT T am happy to この教科書 ためにダブ、 5 She working with us on April 16. As many of you already know,Ms 6 Harris majored in fashion design at New York City College and has worke the fashion industry 設問には、 twenty years. She worked as a designer at famous 1. 文書内の 2文脈に合 3書き手の 4.指定され この教科書 7 fashion companies in Paris, Milan, and London coming back to New York 8 last year. I believe her experience will help develop and grow our business She will come to our office to meet with the vice president next Wednesday 」 hope all of you will join us in welcoming her. 1.早く解に ここで扱う のから易し しよう。実 Best, Ray Brown つけて取り 0詳細情報 5(A) call (B) contact (C) announce When is o (D) concern 6(A) started (B) has started (C) start (D) will start Where v のOO0 Why sh 7(A) for (B) since (C) during (D) within のOO0 このよう 答えに早 8(A) because (B) before (C) though (D) about B O 0 文書の目 (A B 0 What is Why dir 手紙や 88 Key Strategies for Success on the TOEIC" L&R Test: Level 400 ヒントレ

答え教えて欲しいです

Questions 1 through 4 refer to the following announcement. Practice ここでは文挿入間題以外の練習をしよう。 The 5th Annual Robot Exhibition will be held at the Lake Village Center on September 28. This year's top 10 robotics engineering schools will to exhibit robots they have created. Also, Mr. Tomita, a director of popular robot a talk about his new movie. Fans of movies, 2 movies are expected なのでの 3 to come from around the world. So it is recommended that you reserve a hotel room early. You can find more information about both the exhibition 4 nearby hotels on our website, www.robotexhibit.org. 1(A) be invited (B) invite (C) inviting (D) have invited きるのを楽 (B 2(A) gave (B) has given (C) was giving (D) will give A B 3 (A) he (B) his (C)it (D) their 4 (A) and (B) or (C) nor (D) but ne iC) nub a ned (A) 8 87 Unit R-6 長文穴埋め問題 Unit R-6 (Part 6) D D D D (O (B

英語が苦手なので答え教えて欲しいです。 どちらかだけでも構わないのでよろしくお願いします

. that Anna Harris has agreed to be our new chief designer. Questions 5 through 8 refer to the following e-mail. TO |All design team staff FROM Ray Brown 54問)。具 -1つの文書 -2つの文書 3つの文書 1つの文書、 |April 2 New chief designer DATE SUBJECT T am happy to この教科書 ためにダブ、 5 She working with us on April 16. As many of you already know,Ms 6 Harris majored in fashion design at New York City College and has worke the fashion industry 設問には、 twenty years. She worked as a designer at famous 1. 文書内の 2文脈に合 3書き手の 4.指定され この教科書 7 fashion companies in Paris, Milan, and London coming back to New York 8 last year. I believe her experience will help develop and grow our business She will come to our office to meet with the vice president next Wednesday 」 hope all of you will join us in welcoming her. 1.早く解に ここで扱う のから易し しよう。実 Best, Ray Brown つけて取り 0詳細情報 5(A) call (B) contact (C) announce When is o (D) concern 6(A) started (B) has started (C) start (D) will start Where v のOO0 Why sh 7(A) for (B) since (C) during (D) within のOO0 このよう 答えに早 8(A) because (B) before (C) though (D) about B O 0 文書の目 (A B 0 What is Why dir 手紙や 88 Key Strategies for Success on the TOEIC" L&R Test: Level 400 ヒントレ

英語の問題です。 わからないので教えて欲しいです。 よろしくお願いします

. that Anna Harris has agreed to be our new chief designer. Questions 5 through 8 refer to the following e-mail. TO |All design team staff FROM Ray Brown 54問)。具 -1つの文書 -2つの文書 3つの文書 1つの文書、 |April 2 New chief designer DATE SUBJECT T am happy to この教科書 ためにダブ、 5 She working with us on April 16. As many of you already know,Ms 6 Harris majored in fashion design at New York City College and has worke the fashion industry 設問には、 twenty years. She worked as a designer at famous 1. 文書内の 2文脈に合 3書き手の 4.指定され この教科書 7 fashion companies in Paris, Milan, and London coming back to New York 8 last year. I believe her experience will help develop and grow our business She will come to our office to meet with the vice president next Wednesday 」 hope all of you will join us in welcoming her. 1.早く解に ここで扱う のから易し しよう。実 Best, Ray Brown つけて取り 0詳細情報 5(A) call (B) contact (C) announce When is o (D) concern 6(A) started (B) has started (C) start (D) will start Where v のOO0 Why sh 7(A) for (B) since (C) during (D) within のOO0 このよう 答えに早 8(A) because (B) before (C) though (D) about B O 0 文書の目 (A B 0 What is Why dir 手紙や 88 Key Strategies for Success on the TOEIC" L&R Test: Level 400 ヒントレ

英語苦手なので答え教えて欲しいです

. that Anna Harris has agreed to be our new chief designer. Questions 5 through 8 refer to the following e-mail. TO |All design team staff FROM Ray Brown 54問)。具 -1つの文書 -2つの文書 3つの文書 1つの文書、 |April 2 New chief designer DATE SUBJECT T am happy to この教科書 ためにダブ、 5 She working with us on April 16. As many of you already know,Ms 6 Harris majored in fashion design at New York City College and has worke the fashion industry 設問には、 twenty years. She worked as a designer at famous 1. 文書内の 2文脈に合 3書き手の 4.指定され この教科書 7 fashion companies in Paris, Milan, and London coming back to New York 8 last year. I believe her experience will help develop and grow our business She will come to our office to meet with the vice president next Wednesday 」 hope all of you will join us in welcoming her. 1.早く解に ここで扱う のから易し しよう。実 Best, Ray Brown つけて取り 0詳細情報 5(A) call (B) contact (C) announce When is o (D) concern 6(A) started (B) has started (C) start (D) will start Where v のOO0 Why sh 7(A) for (B) since (C) during (D) within のOO0 このよう 答えに早 8(A) because (B) before (C) though (D) about B O 0 文書の目 (A B 0 What is Why dir 手紙や 88 Key Strategies for Success on the TOEIC" L&R Test: Level 400 ヒントレ