矢印のところって×2をしたんですか？？ それだったら、なんで外にある2分の1が4ぶんの1になってるんですか😭？？

n 3k-1 S.= 2 ³ª −¹ = -1/2 (3′— 1) vainadas k=1 2 101 14 AUT k=1 = 1/(2³"-2¹) = ²/ | _n} ₁ ² 1 [3(3-1) 2 3-1 k=1 k=1 THE COP n 13 = 1/12/12/2 (3"-1)-n=1/12(13(3"-1)-2] (3+¹-2-3)

最後のthemは何を指していますか？ あと2文目の和訳もして頂きたいです( . .)"

3 W Choose the best word or phrase and fill in each blank. (1) b/10/ We can ask questions and open up areas of their memories which would otherwise have been lost. But no special attempt was made by the interviewers to ( 1 ) them. 1 compromise 2 evoke if b3 issue ob boog 5. serve up al moeniot (USA) van of bachadashed The wealth that we get from economic growth does not (2) people over all — just a atau berlip wall arbloole

ポイントを読み取ろうと内容を確認しようの それぞれの回答があっているかの確認をお願いします また、解けていないところの回答を教えてください

◎区切りごとに意味をとりながら、 音読しよう。 CUSLAUTUR Ⓒ When I was little, / I really liked African animals. // @ I always wanted M to do something / for them. // HO syns i gaidrow need stilst eed vdW Africa, D.Trata 3 In college, / I studied zoology / and had a chance to visit Kenya. // 37 H heti [need VED in danger 4 There, / some people tried to protect wild animals / as important tourism holtz 10 H resources. // 5 Others tried to eliminate them / because they attacked farm GEO GINA CO CT OFORY P rive, on may not ment srom not annavee eri ni thod s ni gaivil need eve animals / or damaged crops. // I learned that the coexistence between dt ni Jast ai gaivil need stizeT asd grof wOH wildlife and humans / was a complicated issue. // Ssanay UL gers / to After graduating from college, / I wondered / what I could do for wild animals. // GI had tried several jobs / before I decided to become a HOA veterinarian. // Then, / I went back to Kenya/ to study veterinary medicine. // After five years, / I finally became a veterinarian / to directly save their lives. //

白チャートの問題で青い線で引いてあるところのsin60度の60度はどこからでてきたんでしょうか？

M ■基礎例題 139発展例題 142 ⓘ 基礎例題 140 1辺の長さが3である正四面体 ABCD について,次のものを求めよ。 (1) 正四面体 ABCD の高さん (2) 正四面体 ABCD の体積V 空間図形の問題 平面図形を取り出して考える (1)高さを辺にもつ三角形を取り出して考えるとよい。 □ A 頂点Aから底面 BCD に垂線 AH を下ろす。 る。 CHARI & GUIDE) DUNIA ② 底面の△BCD 上の点Hの図形的意味を考え, 線分BH の長さを求める。 ③ 三平方の定理を用いて, 線分 AHの長さを求める。 (2) (四面体の体積)=1/3×(底面積)×(高さ) $10 解答 形ABCD において、∠A (I)正四面体の頂点Aから底面の△BCD 黄八玉((1) △ABH, △ACH, に垂線 AH を下ろすと, h=AH で 辺CDの長 △ADH は, 斜辺 長さ △ABH=△ACH≡△ADH H=A0 =2 が3の直角三角形で、 JAH は共通な辺である。 直角三角形において, 斜 辺と他の1辺が等しい三 角形は互いに合同である。 よって BH=CH=DH T したがって,点Hは△BCD の外接円の 中心で,その外接円の半径は線分 BH である。 ABCD において,正弦定理により 21.414として計算せよ。 ゆえに (②2) ABCD の面積は 2 B = 3 =1, B=135°, 1401 よって = = sin60°2BH)2 HADAS BH=√3 h=AH=√AB²-BH=√32-(√3)=√6 ･・3:3sin60°= 1884 3 X2+ 9√3 H -HA (2) = V=3×△BCD×AH=1.9/3.6 9/2 ADN C 4 SOHANAJST ARGY D 11 -A801I HA CD -=2R sin DBC CD=3, ∠DBC=60° ←△BCD CAI =BD-BC-sin/DBC

注意のやり方でやってしまったんですがyは整数だからこのやり方はできないとはどういうことですか？

基礎問 246 第9章 整数の性質 147 不定方程式 ax+by=c の解 10111-480£÷£222 GOVT 8TI ÷ 1001 x, y を整数とする. 方程式 2.x-3y=7･･････① について,次の問いに答えよ。 (1) ① をみたす (x, y) の1組を見つけよ.asa X (1) (x, y) を (α, β) とするとき, 2α-3β=7････ ② が成り たつ. Eeca Txent=086 ① ② を利用して, π-α は3の倍数で, y-βは2の倍数で あることを示せ. (3) ①をみたす (x, y) をすべて求めよ. ①をみたす (x,y) に対して, r'-y2 の最小値とそのときの x,yの値を求めよ.

教えてください！！

20. 否定倒置・省略・強調 Practice 7. Tom has never kept his promises. He is the ( 1 first 2 last 3 latter O have yet to find 3 have ever found <愛知工業大 > □ 8. The researchers have arrived at an accurate diagnosis but they ( ) how they can cure the disease. 9. ( ) that such a lucky day would come. Never I shall dream 3 Never dream I 2 have been found 4 be to find □ 12. I don't smoke, and (). neither does he 3 he doesn't smoke too ) person we can trust. 4 least 10. Not only ( ), but she tried to steal my money. she told a lie 3 she tells a lie 13. Kaoru likes ice cream, and ( ). Tadashi likes, so 3 so Tadashi does 2 Did I never dream 4 Never did I dream 11. Keiko doesn't like coffee. ( ) do I. 1 Either 2 So 2 must she tell a lie 4 did she tell a lie 3 Also 4 Nor 2 he neither smokes 4 he doesn't smoke neither 2 Tadashi, too, likes 4 so does Tadashi 193 14. She is () that her boss trusts her more than anyone else in the office. Westgat DESARS 1 so able a secretary 2 able so a secretary 3 so an able secretary 4 so able secretary 193 〈 慶應義塾大 > 194 〈駒澤大) 194 <福岡大) 195 〈南山大) 195 〈山梨大) 195 <東海大) 196 <杏林大) 196

やり方を忘れてしまったので教えてください🙏 よろしくお願いします

P 52 sin 80°+cos 110°+sin 160°+cos 170°# £. Sin (90-1) + Cos (180° - 70") + sin (180⁰ - 209) + Cos (180° - 11) Sin lo- CoS70⁰ + sin 20° - Cos 10⁰ 11 問題30°180°のとき,次の等式を満たす0の値を求めよ。 √√3 (2) cos 0=-- 2 2 (1) sin = 0 = (20°, 3⁰° +₁0=1200² 54 (1) 0°≤0≤180° C, cos=- 5 (20°180° で, tan0=3のとき, sine, cose の値を求めよ。 (1) sin³A + Cost = | 0 ≤0 ≤ (A₂0 tan o = (3) tan 0=-1 のとき, sine, tan0の値を求めよ。 0= 1350 Cosaco coso = -√√√ 2² 25 Sin ² 0 = 1 - (- ²)² = 2 25 21 三角比 4 SEADAS 25 ROCE 2 KH 45

教えていただきたいです。 よろしくお願いします。

(15) Tadashi ( |東京電機大 ) in Turkey for three years when the earthquake happened. 2. has been 1. was 3. had been 4. would be 慶應義塾大 (16) Next month I ( 1. know ) Alice for 20 years. 2. will have known 3. am knowing 4. will have been knowing ) on a snake. 杏林大 (17) I heard a scream behind me; one of the boys ( 1. step 2. was stepped 3. stepping 4. had stepped 2与えられた指示にしたがって,以下の問いに答えなさい。 A. 日本語の意味に合うように, 1~7の語を並べかえ, 3番目と6番目にくる語の番号を答えなさい。 自分のしようと思うことをふれ回る人間は,たいてい実行はしないものです。 [立命館大] People who go ( 1. what 2. around 3. they 4. about 5. going 6. are 7. talking) to do don't usually do it. B. 次の英文の下線部 ① ~ ④ から不適切なものを1つ選び、正しい形に直しなさい。 立命館大 John @ has been talking on the phone for hours when his friend dropped by his house the other night. 3 4 C. 日本語の意味に合うように、下の1~4から適当なものを選びなさい。 成城大 改題 今年の12月で、 私はここに10年住んだことになる。 ) here for ten years. In December this year, I ( 1. am living 2. have lived 3. have been living 4. will have lived Lesson 02 助動詞 1 与えられた選択肢の中から、もっとも適当なものを選びなさい。 (1) The student did everything she ( 1. can ) to avoid making any mistakes in the test. [北海学園大 3. would 4. will 2. could (2) You ( ) go jogging after dark in this neighborhood. 法政大] 2. had better not 3. not had better 4. had not better to (3) You ( ) a receipt when you bought the book. |近畿大 1. could be obtained 2. were obtaining 3. might be obtaining 4. should have obtained (4) You ought ( 関西学院大 ) the package by special delivery. 2. have sent 1. to have sent 3. to have it sent 4. having sent (5) The car broke down, and we ( |慶應義塾大 4. must get ) a taxi. 1. must have gotten 2. had got to get 3. had to get (6) "Do I have to finish this assignment now?" "No, you ( 3. needn't ). There's no hurry." 1. couldn't 2. mustn't 4. wouldn't 札幌学院大 notes Lesson 011 (15) Turkey [] (17) scream [] Lesson 021 (4) special delivery [] 1. had not better 117

コミュ英 マイウェイ1の教科書のQ&Aです。 良ければあっているか確認して頂けると嬉しいです。 間違えているところは教えて欲しいです🙇

Section1:世界各国で放送されているセサミストリートの特徴は何でしょうか。 through colorful characters. Cookie Monster loves to eat cookies. Big Bird is very tall. Ernie Crreet is a popular TV program for children. It teaches literacy and other lessons ckc silly questions to his friend Bert. Each character in the program has unique features. Sesame Street is viewedby boys and girls all over the world. Actually, it broadcast in ut 140 countries. Some characters in the program are different from country to country. re based on local culture and situations. If you travel to Northern Ireland, you can o Hilda. She is an active, energetic Irish hare. In Mexico, you can see Lola, a cheerful. ave girl. Children around the world enjoy their own version of Sesame Street. brave (Q&A p.120》 の What does Sesami Street teach? Itteaches literacY. 2 In how many countries is Sesami Street broadcast? Itis broadast inabout (40.countaes。 Seame Amigas の Do children in the world see the same version of Sesami Street? (heirown versionot Se same Street. 《True or False》 (1) Sesame Street teaches literacy and other lessons through colorful books. ( ← ) (2) Boys and girls watch Sesame Street in about 140 countries. ( l) (3) You can see an energetic girl named Lola in Northern Ireland.( 下 ) lainit 内から選んで、言ってみましょう。 02ob 《Read Again》 セサミストリートに登場するキャラクターの特徴を下の 1. Cookie Monster 2. Big Bird 3. Ernie 4. Hilda 5. Lola )ane (ビ) n) a. an active, energetic Irish hare b. always asks silly questions C. very tall d.a cheerful, brave girl e. loves to eat cookies 2

この問題の答えを見てもあまりよく分からないので詳しく、丁寧に解説して頂きたいです。よろしくお願いします。

回C線 と サ である。 コ (1) 次のO~0のうち,正しいものは サ の解答群(解答の順序は問わない。) O sin 75° = COS 105° 0 sin 15° tan 15° = COS 15° 0 2 sin? 105° + cos"75° = 1 3 sin' 15° + cos" 75° = 1 1 tan 15° = 1 Cos 165° (数学I·数学 A第1問は次ページに続く。)