教えてください

[12] x, yは実数とする。 次の条件の否定を述べよ。 (1)x>0かつく1 (2) x<0または">0

数学c ベクトル この問題の1番で解答部分の黄色線がよくわかりません。 どうして点Oを通ると分かるのか、O Aに垂直な直線だと分かるのかを教えてほしいです

87 平面上の異なる2点O, A に対して, OA=a とする。 このとき, 次のベク トル方程式において, OP = p となる点Pの全体はどのような図形を表す か。 (1) |+a=p-à △ (2) 2a =\à\||| MARCに対して、条件|PA+PB+PC|=6 を満たす動点Pはど

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174 今,私は重要なプロジェクトの仕事をしているので,休みを取る余裕がない。 Now I'm working on an important project, so I can't( ) go on a vacation. ) |適語補充 Try! Private universities in the U.S. are very expensive. Many parents cannot ) to send their children to such places. ( ① buy ② spend ③ allow ④ afford (亜細亜大)

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170 It is necessary that you ( ) decide where to go first. I must 2 should 3 ought to 4 have to Try! It is essential that all the staff members (ii) present at the meeting. 1 be 2 are (3) were 4 been

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Section 17 後悔を表す 〈should have + 過去分詞> < |67 A: The train was delayed badly because of the heavy snow last night. B: You should (leave) for home before it started snowing. 語形変化 空欄1つに1語を入れること Try! 1. I haven't talked with Cathy for three days after I stepped on her foot. I (apologized/ have/her/to/should) right away. 168 2. Mary regrets keeping it a secret. She thinks she should ( friend the truth. ①have told ) her 2 is telling 3 is told 4to have told (金沢工業大 ) Ted says he couldn't finish the report by the deadline. He ( ) out with us last night. 1 must not go ③ shouldn't have gone Try! I ( 2 can't have gone 4 ought to not have gone ) the file because it was Mr. Jones' private one. I will have opened 2 having opened 4 would be opening that should ③ shouldn't have opened Section 18 169 Ralph never fails to come on time. It is strange that he ( late like this. 1 must 2 will 3 should Try! It is quite correct that Picasso ( O 1 does can It is necessary that you ( should 4 ought to ) be called a great artist. 4 may (**) ) be

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164 His grandfather is very old and can't hear well. He ( (Try!) talk. ① can have heard cannot have heard I don't believe it; he ( ① may ② will 9009 ② must have heard 4 should go 産業大) our 「…したはずがない」 という 〈確信)を表す ) have said so. 3 cannot 4 never (四天王寺大) ものは? 「聞こえたはずがない」 を表すには? 過はこ

(2)の最後の行の計算の方法が分からないので教えてください🙇🏻‍♀️

知 15 棒のつりあい 長さ 重さ W の一様な棒AB があり, AC 端はちょうつがいで壁につけられ,他端Bは,Aの真上の壁上の点 Cに結ばれた糸により,図に示す状態で支えられている。ただし, 棒は壁に垂直な鉛直面内にある。 (1) 糸の張力の大きさTを求めよ。 (2) 棒のA端がちょうつがいから受けている抗力の水平成分, 鉛 直成分をそれぞれ Rx, Ry とする。 Rx, Ryの大きさと向きをそ れぞれ求めよ。 130° s 60° 30° 例題 3 B

なぜ25/1.1cm³が25/1100Lになるのか解説よろしくお願いします🙇🏻‍♀️🙇🏻‍♀️

(a) 2312 (9) 105mol (C) ×100 (2)Maoy0.05ml(29) 25 (7) (2) NaOH2gの物質量は0.05mol. NaOH水溶液は15g、その密度は1.1g/cm3で 量 25 体積= 密度 IT M 0.05 25 1100 11 =2.2mlla 25 L 1100 " 2.

仮定法についての質問です！ 5番と8番両方ともas ifを使った文なんですが、この時のそれぞれの解き方、解説をお願いします

5. Her face ( ) pale as if something horrible had happened to her. 切 2 look asked had looked 6. With more courage, I ( 7. It's time we ( ) meeting for the game tomorrow. ③3 looked 4 looking )her to go out with me. 2 had asked 3 was asked 4 would ask 3. began 2 begun 3 had begun 4 will begin She was treated as if she ( an ) a member of the family. 1 is 2) were 3 has been had been

④⑵ ⑤⑵,⑷,⑹,⑺ ⑥⑴~⑸ が分かりません。解説とともに答えを教えてください。また、他に間違えている所があったら指摘お願いします🙇🏻‍♀️

5 受け身 (受動態) (1) 41 4 〈能動態と受動態> 次の各組の文がほぼ同じ内容を表すように, 空所に適語を書きなさい。 「My father took this picture. <樟蔭高〉 □(1) This picture Was took by my father. Do they speak French in France? 〈日本大第一高〉 □(2) > Is in France? 改〉 (John ate these hamburgers. □(3) These hamburgers were ate by John 〈法政大女子高〉 What language do they speak in Canada? □(4) h. What language Who broke the window? Bo (5) Who Was By_whom 院高 > 大高〉 <駒込高〉 <三田学園高〉 spoken in Canada? 〈法政大第二高改〉 by the window rokon was the window broken? 5 〈能動態と受動態〉 次の文を(1)~(5)は受動態の文に,(6X7)は能動態の文に書きかえなさい。 □(1) Ken likes these pictures. These pictures are liked by Ken (2) She invited me to the party. □(3) My sister doesn't use this bag. This bag is not used by my sister □ (4) Did she eat a lot of oranges last night? I was a lot of oranges eaten by her □(5) People speak English in Australia. English is spoken in Australia. □ (6) Books are sold at that shop. That shop sel □(7) What was cooked by your mother? 6 <受動態> 次の日本文を英文にしなさい。 <ノートルダム女学院高〉 〈天理高〉 year? (1) サッカーは世界中で行われています。 Saty is played "Soccer 〈四天王寺高〉 woods ? □(2) 英語は世界の多くの人々によって話されています。 □(3) この図書館は100年前に建てられました。 (4)この本はやさしい英語で書いてあります。 (5) 私たちはマイクの誕生日のパーティーに招待されました。 〈 帝塚山学院高 > <お茶の水女子大附高〉 〈筑波大附高〉