例題7 (１)です！ 答えの【b-c】の部分がよく分かりません💦 解説していただけますか🙇‍♀️🙏

基礎例題 7 AB=3, AD=4 である長方形 ABCD において,AB=6, AC = c と 9 (1) 辺ADの中点をEとするとき, DÉ を 6,c を用いて表せ。 (2) こと向きが同じで,大きさが1のベクトルdを用いて表せ。 CHART と向きが同じか反対のベクトル & GUIDE g =k(kは実数)と表される (1) DE/CB であるから,まず, DE を CB で表す。 CB=AB-AC (2) 三平方の定理を用いて線分 ACの長さ(すなわち,この大きさを求 1 トルの (2) であるから d= ■解答 (T)A-(58 (1) DE=1/2DA=1/2CB, A=1/12 CB, DA / CB で --- D ←DA // CB, あるから DE-12CB=1212 (62) -c) 2 A_-------4-- # E 3 1 Kit 5 DA-CE CB=AB-A

三次式の因数分解の問題です！ (1)の解き方をなるべく詳しく教えて欲しいです🙇‍♀️

基礎例題 次の式を因数分解せよ。 (2) x+12.x°+48.x+ じ。 CHART Q GUIDE) 公式が使える形を導き おき換え → (1), 項の組み合わせ (1) =(x), y°=(y)° に注目して, x'=a, y'=6 と 一公式で因数分解できる。 (2) 2つずつ項を組み合わせて,共通因数を作り出- (与式)=(x°+12x") +(48.x+64) や(与式) = (x°+- のように組み合わせてもうまくいかないが、(与式) = (与式)=a°-6 のように組み合わせると,うまくいく。 解◆答 =(x+y)(x?-xy+y)(x-y)(x°+xy+y') =(x+y)(x-y)(x°+xy+y')(x°-xy+y') (2) x+12x+48r+64=(3」G)

(1)it,s a guide dog. のit,sのこれは何を指す？ (2)It wears a harness. のItのこれは何を指す？ (3)A blind people can send message to the guide dog through it のi... 続きを読む

写真逆さですみません💦 1️⃣と2️⃣の文章を50～60字程度で意味を変えずに文を書く時どうやって書けばいいのか教えて欲しいです！ なかなか60におさまらずどうすれば良いか分かりません

どhargen 1」 Reading Scene 1 Scer G-1 ne was 19 years old then Afo ho oraduated. she began her career as a L。 Ja G as Journalists than women. so she wwote under the name E. R. Scidmore to G-3 nide her gender. Her writing became Dobular. and she was able to save enough 8 5 th G-1 noney to travel. Scidmore was alwavs interested in travel_and it was her dream to visit foreign countries. Her first trip was to Alaska by steamship. When she returned, she wrote about the experience and createda guidebook d t G-1 about it. This was about 75 years before it became part of the United States. Scene 2 2 After that she traveled to many countries and wrote about her experiences | in them. In her travels, she visited Japan and fell in love with the cherry blossoms. She especially loved to see the reflection of the cherry blossoms in G-3 water. Planting cherry trees along the Potomac River in Washington, D.C. became her dream. 3 After she returned from her first trip to Japan, she wrote letters to people 15 journalist and wrote for various newspapers. At that time, more men worked 1 Eliza Scidmore graduated from Oberlin College in Ohio in the US in 1875. They did not want trees fro Scidmore's Cherry Trees

それぞれの itsの意味を教えて欲しいです！ (例)1行目のits→thisbook

Bob: My father gave me this book. It's about service dogs. Aya: What kind of dog is this? Bob: It's a guide dog. It wears a harness. Aya: What is the harness for? Bob: A blind person can send messages to the guide dog through it, for example, “go" and “stop." Aya: Can the guide dog also send its owner messages? Bob: Yes, messages like“there is a corner” and “there is an obstacle."

分かる人教えて欲しいです！

日本語で与えられた状況に合うように, ( ) 内の語を並べかえて英文を完成させなさい。 (1) 状況帰宅後に何をしたかをたずねられた。 (with / pet / I/my/played ) bird, Rocky, (2) 状況 スコットランドでたまたま見つけたホテルは古くて立派な建築。 聞けば皆は。 (used / church/it/to/a/be ). (3) 状況 散歩している間にだれか訪ねてきたか母親に聞いている anyone stop by(a/was / walk/I/taking / while )? Did (4) 状況ハワイに行ったときの写真を見ながら友だちと話している。 The tour guide ( dress / a / Hawaiian / was / wearing / traditional ).. J人間 中の 多断る人() e文e

この解答で合っているか確かめたいです。教えてください。

Reading DL 10 CD 10 Olympic Volunteers Do you ever dream of traveling and meet- ing people from all around the world? Wel1, it is possible to meet them without trave- ling because sometimes the world comes 5 to a country. When the Tokyo Olympics is held in 2020, visitors from over 200 na- ONAL tions will attend this world-famous event. So how can you meet them? The answer is Volunteers at the 2012 London Olympic Games to become a volunteer. 10 Volunteers are the face of the Olympic Games since they help create a special atmosphere with their warm welcome and hard work. These helpers were first used in the 1948 Olympic Games in London. Sixty-four years later, the city had 240,000 applicants for the 2012 Games, and 70,000 were selected to work at various venues. As an Olympic volunteer, you might direct spectators to their seats in stadiums or push wheelchairs for those who cannot walk. 志願者 教える Whatever yourjob is, you will probably use English to do it. monl gaiood The word “volunteer” comes from the Latin language and means “to dc something for others without expecting to receive something.” However, a: a Japanese volunteer, you will receive something: practice in using you English communication skills. So, in 2020 why not take up the challeng -and show the spirit of “o-mo-te-na-shi," or “hos-pi-ta-li-ty"? Notes ream of 動詞 ing 「~を夢見る、 想像する」 be held in 2020 |2020年に開催される」 Whatever ナとえどんな~でも」 without 動詞-ing |~しないで」 practice in 動詞-ing 「~する練習」 take っ the challenge 「挑戦に応じる、 難題に立ち向かう」

解答が正しいか確認したいです。教えてください！

dream of 動詞 -ing 「~を夢見る、 想像する」 be held in 2020「2020年に開催される」 Whatever. - English communication skills. So, in 2020 why not take up the challenge Reading DL 10 OCD 10 Olympic Volunteers Do you ever dream of traveling and meet- ing people from all around the world? Well, it is possible to meet them without trave- ling because sometimes the world comes to a country. When the Tokyo Olympics is held in 2020, visitors from over 200 na- 5 1ONAL tions will attend this world-famous event. So how can you meet them? The answer is to become a volunteer. Volunteers at the 2012 London Olympic Games 10 Volunteers are the face of the Olympic Games since they help create a special atmosphere with their warm welcome and hard work. These helpers were first used in the 1948 Olympic Games in London. Sixty-four years later, the city had 240,000 applicants for the 2012 Games, and 70,000 were selected to work at various venues. As an Olympic volunteer, you might direct spectators 志原者 教える 15 to their seats in stadiums or push wheelchairs for those who cannot walk. Whatever your job is, you will probably use English to do it. mot gniood The word “volunteer” comes from the Latin language and means “to do something for others without expecting to receive something” However. as a Japanese volunteer, you will receive something: practice in using vour "hos-pi-ta-li-ty"? and show the spirit of “o-mo-te-na-shi," or INotes up the challenge 「挑戦に応じる、 難題に立ち向かう」

crown1のレッスン8のまとめの問題です。 答えが知りたいです🙇‍♀️

2. May I ask you why you didn't participate in the race? 3. The teacher told me how I couldget to her house. [5] 指示に従って、 次の日本語を英語にしなさい。 1.彼女はまるで小さな子どものように泣いた。 [仮定法を用いて] 2. 兄はよく明りをつけたまま眠る。[with を使って) [6] CD を聞いて以下の設問に答えなさい。 間1 The 20th century was a century of (1. and (3. ()に単語または数字を書きなさい。 ). There were two world wars, a (2. )wars all over the world. ) days of suffering." It is perhaps difficult to find any sign of(5. )war, A Japanese journalist even called the 20th century ) in the photos here, but we can if we(6. 間2 対話を聞き、最後の発言に対する相手の応答としてもっとも適切なものを選びなさい。 ア I'm going to be a few minutes late. イ I'll let her know. ウ I'll have my mom give us a ride. エ Ill bring dessert then. [7] 次の問いに対するあなた自身の考えを英語で書きなさい。 Look at a photograph on page 119 in your textbook. Do you like it? Give the reason for your answer. (blcot Sano n evi Srso n ovinb <aud yanmewsond lantet

この問題なんですけどなぜ途中式で 10:6=5:3 よってDC＝分数になるんですか？？

EX 49° AB=4, BC=5, CA=6 である △ABC において, ZAおよびそのが 二等分線が直線BC と交わる点を, それぞれ D, Eとする。i 354 会角形の角の二等分線と比 三角形には, 重号 この重要な点 AB=10, BC=5, CA=6 である△ABC におい て, ZAおよびその外角の二等分線が辺BCまた はその延長と交わる点を, それぞれ D, E とする。 このとき,線分 DE の長さを求めよ。 基礎例題49 ら。 10" 三角形の D Piay Back 中学 B CHARI QGUIDE) 三角形の角の二等分線と比 (線分比)=(2辺の比) 三角形の3辺の垂 定理3 三角形形 1点で [図 1] ADは ZAの二等分線 [図1] 内角の二等分線の定理 BD:DC=AB:AC [図 2] AE は LAの外角の二 等分線 → 外角の二等分線の [図2] A iの食代 A A この三角形の3辺 いい, 外心を中心 [定理3の証明] の交点をOとす 定理 B D CB C BE:EC=AB:AC を利用する。 日解答田 よって OB AD は ZAの二等分線であるから ゆえに,点Oは BD:DC=AB:AC したがって,A ゆえに BD:DC=10:6=5:3 3 DC= 5+3 よって 3 15 I三角形G -BC= -×5=- 8 8 -10、 6. また, AE は ZAの外角の二等分線で B B D 5 あるから BE : EC=AB: AC Piay Back のゆえに BE:EC=10 :6=5:3 中学 C よって BC:CE=(5-3) : 3 10- C B =2:3 CE-ac-3- B 三角形の3つの内 ゆえに "E 6 =BC= 2 15 ×5= -10 定理4 三角形 2 -3BC=2CE したがって 2 DE=DC+CE 1点で 15 15 8 75 2 8 この三角形の33 といい、内心を中 求めよ。 機分DEの