空欄カからやり方が分かりません

(2) は定数とする。 △ABCにおいて, sin CAB : sin ∠ABC : sin ∠BCA = 5:r:7 AB が成り立つとすると, オ BC カ である。 また, cos ∠ABC をの式で表せば, cos ∠ABC キ となる。 △ABCが直角三角形となるようなの値のうち,最も小さい値は ク である。 r = = であり,の値のとり得る範囲は

Cの問題はアンダーラインを引いて終わりで合ってますか？

About you Listening and writing A good idea? 1 A 4.30 Listen to Sophia and Alan discuss the inventions from the article on page 124. For each invention, who says it's a good idea? Check (✔) Sophia or Alan. Invention 1. virtual goggles 2. a space elevator 3. a smart mirror About B) 4.30 Listen again. Write one reason why Sophia or Alan thinks the invention is a good idea. Do you agree? Discuss with a partner. you C Read the article below and the Help note. Underline the words that list ideas. Home Edit Who says it's a good idea? Sophia apeAlan Document Elements Tables Table Layout Charts Why? Smart Art "Smart" Refrigerators Scientists predict that people will have "smart" refrigerators in the future. Scanners will read bar codes on food and... X I think this will make our lives better. First, you won't need to go grocery shopping anymore, so.. Second, you'll never come home and find an empty refrigerator.. Next, scanners will tell you if the food is bad, so you won't get sick... Finally, you'll be able to ... Help note Listing ideas First, you won't need to ... Second, you'll never... Next, scanners will... Finally, you'll be able to ... D Write a short article about a future invention. Will it make life better or worse? Why? Give four reasons. Free talk p. 135

出来れば全ての問題解説して欲しいです！ 分からない問題などある場合はわかるとこだけでも結構です！すみません至急お願いします🙇‍♀️

2 次の英文を完成するために最も適当な語句をa~d の中から選んで解答用紙にa~dで 記入しなさい。 (1) I wish they would ( a. leave (3) Let's go by taxi, ( a. will you (2) Can you give me a call when you ( a. will arrive b. arrived (4) I was ( a. said (5) He didn't know ( a. what (6) They enjoyed ( a. study (8) Weather ( a. permits b. put ) me alone. (10) I ( )? b. shall we a. shouldn't (7) Do you know what language is ( a. spoken b. to speak c. make b. where ) to by a foreigner at the airport. b. told c. spoken ) at the train station. c. are arrived c. won't you d.get ) to consult with when he was young. c. when ) in Brazil. c. speaking (9) The buses here are often late since the traffic is ( a. heavy b. much c. a lot d. arrive ) help crying whenever I hear that song. b. mustn't c. can't d. don't we ) with the students came from African countries. b. to study c. studying d. studied d. informed d. whom ), the final game will be held tomorrow morning. b. permitting c. to permit d. of speaking d. permitted ) during rush hour. d. slow d. won't

回答お願いします🙇

UNIT 7 Reading Reading 33点 10点 Grammar /32点 /15 Information Listening Writing /10 TOTAL 100点 全文 音声 なまけ者のトムが望んだ仕事とは何でしょう。 Tom was a very lazy man*. He didn't like hard work. But he needed a job. One day, (his/Tom / a job / asked / uncle / him / find / to ). "What kind of job?" asked the uncle. Tom answered, "I don't want to work. I want meat for lunch every day. I just want to walk around and take naps*. And I want 100 dollars a day." "( )" the uncle sighed*. 2 One day, Tom got a call from his uncle. "Tom, I found the perfect job for you. A tiger at the zoo died recently. They need a new tiger. You can be the tiger. You'll wear a tiger's skin and walk around, eat meat, and sleep in the cage* like a real tiger." "( 3 )" said Tom. "I'll start tomorrow!" 5 3 The next day, Tom was in the cage in tiger's fur. He just walked around, ate meat, 10 and took a nap. Tom was happy. 44 Suddenly, he heard an announcement*. "We'll soon have a special show. It's a fight between a lion and a tiger! Enjoy this exciting show." "( )" He looked around his cage. Then another cage was carried next to his. A fierce-looking* lion was in it. "I'll be killed!" he cried. The doors of both cages were opened. Tom jumped back. "( 6 )" 15 The big lion slowly walked toward him, roared*, and opened its mouth. "Stop! I'm not a tiger! I'm a man!" 5 "Shhh!" Tom heard a small voice from the lion. "( Ⓒ )” (252 words)

この問題の3行目からよく分かりません😭 教えてください🙇‍♀️

sin(0+)>0 cos0 + sin@cos ano+cos Osin />0 6 (2) cos0+sin0+ √3 2 √3 sin(0+)>0 3 sin+cos >0 x≧0のとき､ 2 π 4 3 したがって、右の図より、00+/ よって、 ーπ tπ 7/8/1/21 << π 3 1 R 23 π 10 11x

全ての解説出来ればよろしくお願いします🙇‍♀️ 分かるとこだけでも構いません😥基礎から出来ていないため丁寧に解説していただけると助かります よろしくお願いします、、！

2 次の英文を完成するために最も適当な語句をa~d の中から選んで解答用紙にa~dで 記入しなさい。 (1) I wish they would ( a. leave (3) Let's go by taxi, ( a. will you (2) Can you give me a call when you ( a. will arrive b. arrived (4) I was ( a. said (5) He didn't know ( a. what (6) They enjoyed ( a. study (8) Weather ( a. permits b. put ) me alone. (10) I ( )? b. shall we a. shouldn't (7) Do you know what language is ( a. spoken b. to speak c. make b. where ) to by a foreigner at the airport. b. told c. spoken ) at the train station. c. are arrived c. won't you ) to consult with when he was young. c. when ) in Brazil. c. speaking (9) The buses here are often late since the traffic is ( a. heavy b. much c. a lot d.get ) help crying whenever I hear that song. b. mustn't d. arrive ) with the students came from African countries. b. to study c. studying d. studied d. don't we c. can't d. informed d. whom ), the final game will be held tomorrow morning. b. permitting c. to permit d. of speaking d. permitted ) during rush hour. d. slow d. won't

130. このような具体例（図を書いてみる等）で規則性を考えて解く問題において、どういう感じで記述するのがいいのでしょうか？？

582 ①① 基本例題 130 図形と漸化式 (1) ･･･ 領域の個数 平面上に,どの3本の直線も1点を共有しない, n本の直線がある。 次の場合、 平面が直線によって分けられる領域の個数をnで表せ。 (1) どの2本の直線も平行でないとき。 (2) (2) 本の直線の中に, 2本だけ平行なものがあるとき。 指針 (1) n3の場合について,図をかいて考えてみよう。 ヨコ 解答 an (1) n本の直線で平面が α 個の領域に分けられているとする。 (n+1) 本目の直線を引くと,その直線は他のn本の直線で (n+1) 個の線分または半直線に分けられ、 領域は (n+1) 個 だけ増加する。 ゆえに An+1=An+n+1 ¿+(T+5√]$¬1+ よって an+1-an=n+1 また a₁=2 数列{an}の階差数列の一般項はn+1であるから, n ≧2の とき これはn=1のときも成り立つ。 201 ゆえに, 求める領域の個数は __n²+n+2 2 (図のD1~D』)であるが,ここで直線ls を引くと,ls は 42=4 l1,l2 と2点で交わり、この2つの交点で ls は3個の線分また は半直線に分けられ, 領域は3個 (図のDs, Ds, D7) 増加する。 よって as=az+3 2.2-0 PARTY 同様に, n番目と(n+1) 番目の関係に注目して考える。 n本の直線によって α 個の領域に分けられているとき, (n+1) 本目の直線を引くと 域は何個増えるかを考え, 漸化式を作る。 2-14 (2) (n-1) 本の直線が (1) の条件を満たすとき, n本目の直線はどれか1本と平行になる から (n-2) 個の点で交わり, (n-1) 個の領域が加わる。 n-1 an=2+Σ(k+1)=- k=1 n²+n+2 2 (2) 平行な2直線のうちの1本をeとすると,l を除く (n-1) 本は (1) の条件を満たすから,この (n-1) 本の直線で分けら れる領域の個数は (1) から (8+.0) an-1 更に,直線ℓを引くと,ℓはこれと平行な1本の直線以外の 個の点で交わり の領域が増え よって、求める領域の個数は an-1+(n-1)=- (n−1)²+(n−1)+2 2 n²+n 2 +(n-1)=- n=3 Ilz D₂ [類 滋賀大] D3 Do D [=8+₁0 D₁ k=1 Σ(k+1)="Ek+ Z1 =(n−1)n+n-1 D2 a3=7 人 一 (n+1) 番目の直線は n本 その直線のどれとも平行でな いから,交点はn個。 (1) の結果を利用。 l DA αn-1 は, (1) の annの 代わりにn-1 とおく。 e

(1)別解では解けるのですが、別解ではないやり方では理解できてないです 解説お願いします(＞人＜;)

2-6² | = |21|6²| 解1 Part 2 証明 a = (a,b), T = (C₁) 728. (lall51) ²_ |ñ· 51² = (a² + b² ) ( c² + √²³) = (ac+ b)² = a^²^² + a²d² + b²c² +#²-a²²+2acbd-1²*² a²L²²-2acbd + b²c² (at - bc)² =0 B = 12.5| = |2|(6)

英検準2級の英作文の採点お願いします！ Yes,i do. I think it is a good idea for people to leran how to cook by using the internet. I have two reasons. First... Read More

ライティング of the Wolves ●あなたは、外国人の知り合いから以下の QUESTION をされました。 • QUESTION について, あなたの意見とその理由を2つ英文で書きなさい。 FUSTA VALITSUS ●語数の目安は50語~60語です。 5 ●解答は, 解答用紙のB面にあるライティング解答欄に書きなさい。 なお、解答 欄の外に書かれたものは採点されません。 ■解答が QUESTION に対応していないと判断された場合は, 0点と採点される ことがあります。 QUESTION をよく読んでから答えてください。 triguod QUESTION bas zaylow Do you think it is a good idea for people to learn how to cook by using the Internet? ni gaivil 150 oyloy bool mail evig endrid og til st saleming bliw 101 esens laipaqe sdi iziv siqooq lo tols & menn to 26 ano vost the of Royom baid sun sonor paid bns 298ïorl idgwond t

教えてください🙏 あまり意味がわかってません、、

A〈分詞+名詞〉 次の各文の意味がとおるように( (1) There were many (アbreaking / イbroken) toys in the box. ・ )内からふさわしいものを選び、記号で選びなさい。 B (2) Do you know the (アsmiling /イ smiled) girl? (3) My father bought a (アusing / イused) car last year. (4) The box is filled with (ア collecting /イ collected) stamps. (5) Soccer is an (アexciting /イ excited) sport. B〈名詞+分詞+なにを・いつ･どこでなど〉 次の各文の意味がとおるように( (1) The girl (talk) with Ms. Green is my sister. (2) These are the books (give) by my uncle. (3) This is the picture (take) last year. (4) There were some students (wait) for a bus.com slom (5) I know the woman (sit) by the window. 現在分詞を使うか、過去分詞を使う ・現在分詞 名詞に「~している」 ● ・過去分詞 名詞に 「~されている )内の語を適する形にかえなさい。