中二 数学 証明 ここの問題分かりません！わかりやすい解説お願いします🙇‍♀️

て <へ ガイジB ACG REI 0 3) の>の誠る4P = ci 角形ABCD, AEEGが 層 9 IMIIAOR2形あのと き目DBであるに とを証明しなさい。 A B 【証明] 4 プ SURの ら年圏@

1個だけとかでもいいので教えていただきたいです。 どうか助けてください。

問3. 次の化合物にIUPAC名をつけよ。 化合物によっては、 立体配置も明示すること。 なお、-OCH3: 人 (⑧) cl ⑲ (c) CH でHcHs chs 1) jレH Hsc に CHsCHzCHCHzCHzCHCHs (は HbC=ニCHCHCH H CHs Cm (@) (h) 9H 呈 CHsC三CCH。zC三CCHzCHs -でて 9 CHCHLCHCHdHa EE

この問題を教えていただけませんでしょうか

次の文を読んで、一番適当と思われる語を入れましょう。 1. fgold were more common, 放 一--- not be so valuable. 0) a. Wil b. shall (c.would d. can て 2. If Dave ----- warmer clothes, he wouldnt have caught a cold. ag. has worn b. will wear C. WaS Wearindg dhad worn d 3. If VOU ------ too much, you wl become stressed. a. will work b. work (Cc/Worked d. had worked に 4. If Jane ------- me, | would be the happiest man in the world. a. Ioved b. will love c. had loved (d) would have loved 5. lf salt ------- added to water, it diSSolveS. 4 il be (d) has . WaS b. IS C. WI 99

どうすればいいか全く分かりません…。 教えてください🙇‍♂️

ランツーニー マーー ワリBEo 4 NE しまSe FIhadhae sungh money 1 would have bought the car. 2.Nick hadn tgiven his advice, their presentations would not have bee as SUCCeSSful. |ヵ114 7.6] 3. fyou had been more careful, you wouldmt be lying in this hospital now 4.TfIwere you, 1 wouldnt have said such a thing. 回 次の文を仮定法週去完了を使った文に書きをかえなさい。 1.Since he didnt have enough money, he couldnt buy 2. Since 1 didnt get up earlier, 1 was late for sch

答えが②になる理由がわかりません。

(9 he( )tostart a business in 1994, he couldn't get a loan. tries ②wastried ③tried ④hadtried (国士舘大) ⑯ ⑤ 呈届 he gets back, hisfather( )outofthe hospital. will be being ②w由be ③wouldhavebeimng ④wouldhavebeen (東 海大) (⑳下 (D ② (⑧)She has a ticket for the baseball game.But下( )tomorrow,iwillbe called o古 it willrain の②it wasraining ⑧ranns ④itrained (東京電機大) (8 _③ 人 折ら

急いでます…… できる方、よろしくお願いします！

4は。 中学生のTakeshiが大いた甘文です。これを読んで,問1一問4に符えなきい。 *印のつ いている請名には。 本文のあとに(注]があります。(26京) My grandfather and grandmother ive with us My grandfather was ahigh school English teacher. but now hes *retred.。 He and 1 always talk about a lot of things when Tm at home Last Sunday. we talked about the Tokyo *Olympics。 He saw the Tokyo Olympice in 1961. about 50 years ago. He said “At that time. 1 was fiteen 1 realy cnioyed watching the Olympic games on TV.but the days before and after the Olympics were also very excidng Japan was really booming. and a lot of things around us were dhanging" He said that at that time。 many new things "appeared, but the most excidng thing for Him was the SAiAosex the *bullet train He was very "ucky to get aVtcket for the trial run *between Tokyo and Odawara He was*the first person at his school to take he Sgwgsex。 so. after the trial run. my grandfather became a*hero. The Sikoee started running on October 1 1964 only 9 days before the *start of the Tokyo Olympics My grandfather said those days were very happy for him We wil have the Tokyo Obympics again in 2020 My grandfather says he wants to work *as as volunteer and help *yisitors from foreign couptries. He asked me,"Do you ant to do something for the Olympics?" 1 said. "T want to work as a volnteer.too 1 jove soccer. and TI hear that we can see some soccer games in Saitama during the Olympics、 Soccer is very popular. and a lot of people from all over the world will come to see the games 1 hope they will enjoy watching soccer here in Saitama。 and T want to do something for them" He said "Tm glad to hear that Smudy Enghsh har, Takeshi and TI teach you" “Thank you.Grandfather 1 camt speak Engish very well now. so Ti study hard・ 1 said ・Then my sister Keiko joined us My grandfather asked her. "Do you want to do anything for the Tokyo Olympics in 2020. Keiko?" She said. “Yes I hope some foreign visitors to the Olympics wil come to our house and stay wih us for a few days ! jike cooking so T want to make many kinds of Japanese food for them* "That sounds greatl You need to practice cooking different kinds of Japanewe food to *get ready for hat Then we can enjoy a nice dinner every night" I said (往) high wehool…高 redired……骨職した, 引退した 0lympiee……オリンピック boom……好集気にわいている appeer……現れる bulet train…新暫、誹列車 lucky……尊運な ticket for the uil run吉筑のチケット between 一 and -……ーとーの同で te first pereon to つ……ーした最初の人 hero……ヒセーロー. 笑生 wao開和 as a Volunteer……ポランティアとして itor……生者 then…そのとき。 そうすれば get ready……準備をする 6三

どう計算したら 下から2行目になるんですか？ 急ぎでお願いします

、 を LD)(GCDに6居和0 Cp>oょ5 cp-6 ニムざ こ 2 が*でき Rめ3| 人 sin 2ACD の層 @ 2を用いて, 記の LE/ ーー計るポめるこ - とができた。 (3) の 点Dから平面 ABC に垂線を引き。 ABC との交胡を また の直角三角形 DHA, DHB, DHC に おいで 辺 DH は共通 に BD王CD であり, ⑫②より AD CD(三 である。 て. 斜辺と他の1 の長きさが等しいから, こ 。 よって, 斜辺と他 1 辺 語還は NB は合同である。したがって AH = BHニ P AT MI 正弦定理により AB 2AHニニンACB

こちらの問題分かる方いましたら教えてください🙇‍♀️

⑩ choose the best answer to fill in the blanks. ij ( 員) Do you feel like ( ) for a swim. DDgO ②to go ③ going のHaving gone (環還lk 9 The market share of inmported grapes is larger than (hat of domestic ( i リPone ②) ones (③that のthose 人 8 Once you meet her youl find that she is nice to ( ). ①talk to her ②talk to Dtalk ④talked (上 (9 The children are outside. 1can see them ( ) in the garden. Dto play ②to beplaying ⑧playing ④being played に 5 AsThad my bicycle stolen, Tbought anew ( 示 Danother めother ⑧i ④ ome 上 6 When ( ) Mr.Jackson? Dhave youmet ②didyoumeet 3③ You have met ①have met you ( 7 ( ) his homework, he couldmt go swimming. りFinishing not ②⑫ Not being fiished $ Not fimished ゃNot having fimished (8 ( ) you were coming, T would have invited you to lunch. りDTIhave known ②Should 』 know 3ぅ Had 』 known むりITIknow 9) He ( ) have done it by himselfi somebody must have helped must クhas to 9can ④camii IO 1 wanted some potatoes, but there were ( ) Pnome 2 no other 3$ no things mi He was seen ( ) out of the room. ①go ②gone having gone 。 ⑳

答えは21がウ、26がエなのですが、どうしてですか？

22) 9 29/ 25) A: This book is more useful for improving my Pngjishthan ( )-. B: Yes, this is the most useful. ア something else イ anyothers ウ alltheothers 工 nothing e My close friendhas ( ) more DVDsthan I have. ア much イ many ウ very エ lot Tleft my notebook at home. so please lendme ( 9 ア write something on イ something to write with ウ write something with エエ something write on To be frank,people ( ) ]arge do not have any interestn the electoral sys 2 im イ on ウツ at エエ of 1 dontthink we are going ( ) themght direction. We may have lost our ア to 還Oh ウ at エ 1 think our school nurse is nicerthan ( ) inthis school. ア all others イ everyone else ウ any other teachers 工 anyone else

どこが違うかわからないです。指摘して欲しいです。

0 4 飼叶2ー -107 をみたす々ceC を全て決 定せよ (理| g 複素共役について. も込みで).