赤線の部分についてなのですが、どう計算すればこの答えがでてきますか？

B 345 上底の長さがα 下底の長さが6の台形がある。 この台形の対 角線の交点を通り,上底と下底に平行な直線が台形の他の2辺に よって切り取られる線分の長さをα 6で表せ。 →

z,z’を複素数とするとき、三角不等式|z+z’|≦|z|+|z’|が成り立つことを実数a,b,c,dを用いてz=a+bi,z’=c+diと表すことで示しなさい。という問題の解説をお願いします🙇

③の式と④の式の連立がわかりません教えてください

問題 93 電気量保存の法則 ② 物理 次の文中の空欄にあてはまる式を記せ。 図のように、電圧V(V)の電池E1 と E2, 電 気容量 C(F)のコンデンサー C1 と C2, および スイッチSとS2を接続する。 はじめ, スイ ッチは開いた状態であり, コンデンサーは電 荷を蓄えていないものとして, 次の操作Ⅰ か らⅢを順に行う。 . b 2 an E1 E2 操作Ⅰ スイッチ Si を a1, スイッチS2を2に順に接続した。 コンデンサー XO Cの右側の極板に蓄えられる電荷は,Q(I) 〔C)である。 操作Ⅱ スイッチS を bi, スイッチS2をb2に順に接続した。 このとき,コ ンデンサーC」の右側の極板および,C2の左側の極板に蓄えられている電 荷をそれぞれQQとすると、Q=Q1+Qである。一方、キルヒホッ (2) (V)である。 Q1. フの第二法則よりVをQ1 Q2,Cで表すと, V = = (4) 〔C)である。 Q2 を C, Vを用いて表すと, Q1 = (3) (C), Q2 操作Ⅲ スイッチ Si を a1, スイッチ S2をa2に順に接続したあと、スイッチ S1 を b1, スイッチ S2をb2 に順に接続した。 コンデンサーCの右側の極板 に蓄えられている電荷をC, Vを用いて表すと, (5) 〔C)であり,コン デンサーC2の左側の極板に蓄えられている電荷を C, Vを用いて表すと, (6) 〔C)である。 〈愛媛大〉 12/218/ のとき, 右側の極板には正の電荷 i+Q かえられている。 コンデンサー C1 にかかる電圧はV[V] なので,蓄えられる電荷Q[C] は,Q=CV[C] E₁ V 時間について指示がない場合は, 十分に時間が経過 したときを答える。 EiE2は名前で実際の電圧はVO (2)スイッチを切り替える前, C, の右側の極板およびC2 の左側の極板に蓄え られている電荷は,それぞれQ=CV [C], 0 [C] である。 スイッチを切り替 えると,電荷が移動し, それぞれQ[C] Q2[C]となる。 Q1 Q2 を正と仮 定して、向かい合うCの左側の極板と C2 の右側の極板に蓄えられている電 190

書いてあるところまでは考えたのですがこの後からわかりません。

[クリアー数学Ⅰ 問題209] AB=6√3,CA=9, ∠C=90° の △ABC がある。 点Pは頂点CからAまで, 辺 CA 上を毎秒3の速さで進む。 点QはPと同時に頂点Bを出発し, 頂点まで辺BC上を 毎秒3の速さで進む。 2点P, Q が最も近づくのは, 動き始めてから何秒後か。 Bi ③新 3 9 9 36 100 3√3 9秒 6 81+0=100 A 2 0=27 33 D CP=3t 三平方使って PQ²= (967 - (7+)" (37° =27-18t13t+9t =27-1t.t12t = 12t² - 18 + + 2 = -18t+27= 全白は自身の取り組みに応じて、活用すること。 t ようにすること。

この長文問題の答えと解説をお願いします。

15 語数: 398 語 出題校 法政大 5 We are already aware that our every move online is tracked and analyzed. But you 2-53 couldn't have known how much Facebook can learn about you from the smallest of social interactions - a 'like'*. (1) Researchers from the University of Cambridge designed (2) a simple machine-learning 2-54 system to predict Facebook users' personal information based solely on which pages they had liked. E "We were completely surprised by the accuracy of the predictions," says Michael 2-55 Kosinski, lead researcher of the project. Kosinski and colleagues built the system by scanning likes for a sample of 58,000 volunteers, and matching them up with other 10 profile details such as age, gender, and relationship status. They also matched up those likes with the results of personality and intelligence tests the volunteers had taken. The team then used their model to make predictions about other volunteers, based solely on their likes. The system can distinguish between the profiles of black and white Facebook users, 15 getting it right 95 percent of the time. It was also 90 percent accurate in separating males and females, Democrats and Republicans. Personality traits like openness and intelligence were also estimated based on likes, and were as accurate in some areas as a standard personality test designed for the task. Mixing what a user likes with many kinds of other data from their real-life activities could improve these predictions even more. 20 Voting records, utility bills and marriage records are already being added to Facebook's database, where they are easier to analyze. Facebook recently partnered with offline data companies, which all collect this kind of information. This move will allow even deeper insights into the behavior of the web users. 25 30 (3) - Sarah Downey, a lawyer and analyst with a privacy technology company, foresees insurers using the information gained by Facebook to help them identify risky customers, and perhaps charge them with higher fees. But there are potential benefits for users, too. Kosinski suggests that Facebook could end up as an online locker for your personal information, releasing your profiles at your command to help you with career planning. Downey says the research is the first solid example of the kinds of insights that can be made through Facebook. "This study is a great example of how the little things you do online show so much about you,” she says. "You might not remember liking things, " but Facebook remembers and (4) it all adds up.", * a 'like': フェイスブック上で個人の好みを表示する機能。 日本語版のフェイスブックでは「いいね!」 と表記される。 2-56 2-57 2-58 36

英語のこの問題の解答をおしえてほしいです。おねがいします！

・あなたは、外国人の知り合い (Jake) から、Eメールで質問を受け取りました。 この質問にわかりやすく答え る返信メールを、【 】に英文で書きなさい。 ・あなたが書く返信メールの中で、 Jake のEメール文中の下線部について,あなたがより理解を深めるため 下線部の特徴を問う具体的な質問を2つしなさい。 ・あなたが書く返信メールの中で【 】に書く英文の語数の目安は 40語~50語です。 解答は、解答用紙の裏面にあるEメール解答欄に書きなさい。なお、解答様の外に書かれたものは採点され ません。 ・解答が Jake のEメール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。Jake の E メールの内容をよく読んでから答えてください。 Hi! 】 の下の Best wishes, の後にあなたの名前を書く必要はありません。 Guess what! My parents gave me a camera for my birthday last week. I was very happy because I'd never ow ned a camera before. I take photos with it every day. I'll take a picture of you the next time I see you. Taking photos is great fun, but my camera has too many functions. I don't know how to use them all. Do you think cameras will become more popular in the future? Your friend, Jake Hi, Jake! Thank you Best wishes, for your e-mail.

このbyはなんですか

精講 Terl to (In his youth), Albert Einstein spent a year (idling aimlessly). You don't get anywhere (by not "wasting" time) V something, unfortunately, [owhich the parents of teenagers tend frequently to forget to thoas edi & gribnoge 17 Bit Point

このthoughってどういう役割をしているんですか？？ though、although ってその節で〜だが、という逆説を表す接続詞だと思っていたんですが文脈に合わなくて…

stories as books. She sent her first book to various publishers, but none of them were interested in publishing it. Unlike the publishers, Potter felt certain that the book would be a success, so in 1901, she paid one publisher to print copies of The Tale of Peter Rabbit. Because of costs, this first version was in black and white. The book was quickly sold out, so the publisher decided to publish a color version. This became a bestseller, and the publisher made a lot of money from that book and the other 22 books written later. Potter's sense of business, though was shown in the way she created and sold goods related to the books. After publishing the first book, she made a doll of Peter Rabbit and patented* it. This was the first time a character from a book had been patented. She then went on to develop dolls, games, dishes, and other products. Today, we are used to seeing toys and products connected with characters from books for sale. Peter Rabbit, though, was the first of these. The methods Potter developed to make a successful business out of her children's books are the ones that are often used by entertainment businesses today.

英語の文章問題です はやめにおねがいします 解説が欲しいです 1.2.3.

Reading 6 x The Wind and the Sun 次は、『イソップ物語』の中の1話「北風と太陽」です。英文を読んで問いに答えましょう。 The Wind and the Sun were talking. "I can beat you at anything," said the Wind. "No, I can beat you at anything," said the Sun. A man with a coat came by. The Sun said, "Can you take off his coat then?" So the Wind blew and blew with all his might. But the man only held his coat tightly. Now it was the Sun's turn. He shone gently and steadily on the man. Soon the man grew warm and happy, and he took off his coat. To amo y elondon mor Sometimes we can move people effectively by kindness, not by force. 0.0 Bavale ed al & ting a ni bil por mantenit-il

−b²/4a ＋ 4ac/4aを通分するとなぜ分数の符号は＋になるのでしょうか？ また、 3行目で−b²/4a ＋ 4ac/4aの符号が変わっていますがこれは何をしたのでしょうか？

ax+bx+c=0 a (x+ b₁₂)² + b² + 4ac b)+-+4ac ba 4a (x+1/02 ) ²= b² 4 ac x 492 -bIb24ac 2a = 0 =0