黄色チャートの130です。 余弦定理を使って解いたのですが、解が4分の3なのに、2つ4分の3と、4分の1の2つ出てきてしまいました💦 どうしてですか？😭

130:3 B J E 2413 120 Þ 片 NT3 √√₁3 4. B C² = 9 +1 2.3- 13 16 2 TB. (栗)=x・P-XX.1.12/2 ² x² X = Bc.>0 BC = X ² - X = 3 4 -2.3.1(-1/2) x ² - x + 10+ 3 = 13 x ² + | − x 3 16 16 x ² - 16 x + 3 = 0 (4x²-3) -|- 13 +1:0 16 (4x - 1) = 0. 4X², 120 14 ++ x

日本で活躍するイギリス人の琵琶奏者のお話を聞き、15語程度で簡単に感想を書くという問題です。 I thought you who practiced hard to become a biwa musician are very wonderful . 訳:私は琵琶奏者... Read More

4行目のalmostの働きについてお伺いしたです。副詞だから直後の名詞にかかることはできないと思ったのですが、何を修飾しているのでしょうか？

Part B to More than enjoyment-love, even passion for music were expressed 要らな (183. #212] by everyone I interviewed. Terry Ollis, founder member of the British cult psychedelic band Hawkwind in the late sixties, described his 幻覚的な relationship to the music as almost a spiritual thing... I believed — I C think we all did really — totally in what we were doing absolutely. I ・絶対的に、無条件に

黄色チャートの例題103です。 マーカー引いた部分がなんのために書いてあるのかわからないです。 解答よろしくお願いします🙏🙇‍♀️💦

158 重要 例題 103 2直線 tが実数の値をとって変わるとき, 2直線l:tx-y=t, m:x+ty=2t+1 の交点P(x, y) はどのような図形になるか。その別 を求めて図示せよ。 名城大 CHART P(x,y) の軌跡 つなぎの文字を消去して, x, SOLUTION tx-y=t...... x+ty=2t+1 ······ .... ①, ② からtを消去すれば, 交点Pの軌跡の方程式が得られる。 ・・・・・･ 2直線 4. m の交点Pの座標(x,y)は①と②をともに満たす。 解答 l: tx-y=t [1] x1 のとき 図 ③ から t=- なお, ① ② が表さない直線があるから, 求めた図形から除外する点が出て ことに注意する。 ･①, m:x+ty=2t+1 t(x-1)=y t(y-2)=1-x [2]x=1のとき ③から ****** ...... ④に代入して COMER だけの関係式を導く ・② とする。 4 + m) = A - ³(²-) =(58 y=0 x=1, y = 0 を ④ に代入して t=0 よって,点 (10) 2直線の交点で ある｡ 以上から, 求める図形の方程式は 円 (x-1)^2+(y-1)^=1 ただし,点 1,2)を除く。 また,交点Pの描く図形は右の図の ようになる。 ・② とする。 inf. 図形的に考え 0=1÷ある。(解答編 照) srion x-1 両辺に x-1 を掛けて整理すると (x-1)+(y-1)^=1・ ⑤ においてx=1 とすると y=0, 2 ゆえに, x=1のとき, 点Pは円 ⑤から2点 (1,0), (1, 2) 除いた図形上にある。 MAPO y(y−2) *1 sk YA 2 0 ゆえに、 =1-x EXERCISES x A 84② 2 定点 (5,C 曲線 x2+y^ ①が表さないのは 直線 x=1 ②が表さないのは 直線y=2 よって除外する点 (12) である。 PRACTICE･･･ 103④ xy平面において,直線l:x+t(y-3)=0, m:tx-(y+3)=0 を考える。 tが実数全体を動くとき、直線ℓとmの交点はどの 85③ 関数f(x)= (1) 放物線 (2) 0<as (3) (2) 86③ 方程式x (1) 定数 (2) B 87③ 座標平面 x軸に指 88④ xy平面 (1) C よ。 (2) (1) 89⑨ (1) た (A) 90⑤ 座標 満ﾌ (1) (2) HNT 87 8 8

（3）について答えはthese new types of cementまたはnew types of cement ですがthe new types of cement でも大丈夫ですか？

6 2019年度 英語 Ordinary Portland cement-t produced by baking lime in a kiln and emits approximately one ton of carb a kiln and emits Cement production is responsible for cement. dioxide for every ton of approximately 5% of global man-made CO2 emissions, according to the World Business Council for Sustainable Development. Cement does absorb some carbon dioxide back from the atmosphere over time, One 2016 study estimated that between 1930 and 2013, the equivalent of 43% of CO2 released from lime during heating was reabsorbed by - although that percentage does not include carbon concrete products worldwide dioxide emitted by the fossil fuels burned to heat kilns, a significant contributor of says. Fennell notes. 東京医科歯科大前駅 - the most common form in concrete- CO2 emissions during production. Unfortunately, this absorption comes at a price, particularly when cement is used in structures that feature steel reinforcement bars (rebar) within concrete. vl(As) CO₂ moves through cement it changes the pH of the surroundings, Fennell says. Concrete loses its alkalinity and, when moisture and oxygen are present, causes the rebar to rust. 2) ad "Rusting steel can expand with great force to as much as nine times its original dimensions if you add up all of the layers of iron oxide," says Randolph Langenbach, an international consultant in building conservation. This expansion causes the concrete to crack, flake and crumble. Svi aft ni adosband huma Degradation is a massive concern, he argues, and problems are not limited to rusting rebar. Everything from air pockets left in the concrete mix when it's laid to salt air buffeting coastal-facing walls, or the use of beach sand in the concrete, can shorten a building's lifespan. As one specialist once put it to Langenbach: "If it ain't cracked, it aint concrete."qubong ao yas guidtyns ogde stornos 90 s of fshoqml is vatns mash *** long llopsd lust ay to Given the concerns about the environmental impact and structural longevity of concrete, why do we continue to build with it? addi Simply put, concrete is cheap, versatile, quick to erect and requires no of weight J

この問題の答え教えていただきたいです

1 日本語に合うように、[ ]内の動詞を適切な形にして、英文を完成させなさい。 (1) 清掃は,正午までには終わっているでしょう。 The cleaning ( ) ( ) ( ] (2) スーザンがメールアドレスを変えていたことを私は知りませんでした。 I didn't know that Susan ( )( (3) 佐藤さんは退職するまで30年間その銀行で働いていました。 Ms. Sato ( ) ( (1) Ben ( juice on it. work] (4) 私たちが映画館に着いたとき, その映画はすでに始まっていました。 The movie ( ) already ( ] 2 [ ]内の動詞を適切な形にして、英文を完成させなさい。 ) ( (2) Shingo ( (3) The players ( rain. (4) Cathy ( stay] ) never ( )( ) ( [ change ] ) for the bank for thirty years when she retired. [ ) ( ) ( )( (2) A: Why were you so tired yesterday? B: I ( ) ( )( me. ) her email address. ) by noon. [ finish (1点×4=4点) ) the new shirt for only five minutes when he spilled ( 1点×4=4点) ) when we arrived at the theater. start 3 [ ]内の動詞を適切な形にして、対話文を完成させなさい。 (1) A: Can you go shopping with me this weekend? B: Yes. I ( )( (3) A: Maki said that she ( )( B: Really? I' 11 go and check. Thank you. (4) A: Did you get the tickets for the play? B: No. All of them ( )( sell ] ) before he came to Hokkaido. )( [ wear ] [ski ] ) for an hour when it began to [ practice] ) in Japan for two years tomorrow. [ (2点×4=8点) [ finish ] ) my assignment by Friday. ) my house for three hours when you called [ clean [ see ) your dog in the park. ) out when I called the ticket office. [

数学の問題です。 2枚目の写真の5×10^21=10^22÷2というのはどこからそのようにできるのか教えていただきたいです。

ある自然数nに対して2" は 22 桁で最高位の数字が4となる。 log102=0.3010,10g1030.4771 として, nの値を求めよ。 また, 2 の末尾の 数字を求めよ。 〔08 慶応大〕

この問題が分からないので教えて頂きたいです…

3 Can you complete this conversati Complete the conversation with the words and expressions in the box. Use capital letters where necessary. Practice with a partner. Then role-play the conversation using your own ideas. all right breaking up hold on a second PU I'll call you back I've got Greg Kenji Greg Greg Waters. Kenji Hello, Greg. Tokyo. I was just time are you arriving on Monday? Greg Well, I have my ticket here. Let's see, I arrive Kenji at, um, 3:30 p.m. OK, I'll Oh, Hold on a This is just let's see ✓this is wearing what do you call it what was I saying Kenji from the office in calling to ask... What come to the airport to meet you. Second-I've got another call. All right Hi. Sorry about that. So, I'll meet you. So, how will I recognize you? Well, I'm tall and Sorry, Greg, I can't hear you. You're droam ? Oh, yes, blond hair and - Greg Kenji Greg OK. Listen, Kenji Hi. That's better. So, ? Greg I was describing myself. So, um, I'll be the blond the sunglasses,. weaking wh guy a USA T-shirt. Kenji Um, OK. Maybe I should wear a - what you call it? A thing with my name on it so you can find me? a badge. Good idea! Greg Oh, where were we with you mean Kenji USA UNIT 1 UNIT 1 12

証明の問題です🥲 (1)で左辺➖右辺🟰0を使って証明したいのですが何回やっても0にならなくて😭 計算して頂けないでしょうか？🥲お願いします😭🙏🏻

PRACTICE 24⁹ a+b+c=0 のとき, 次の等式が成り立つことを証明せよ。 a³(b-c)+b³(c-a)+c³(a−b)=0 ES ES pr (1) (2) (b+c)²+(c+a)²+(a+b)²=2(bc+ca+ab) +on)=("b− 5)('d

画像の(6)のitが指しているものはなにかを答える問題で答えはprosperityなんですが、the prosperityでも丸ですか？一語で答えろなどの指定は無いです

home for us and for those who are to come. The failures that we need to correct arise both from poverty and from the short-sighted way in which we have often pursued prosperity. Many parts of the vicious downward spiral: poor people are forced to overuse world are caught in (5)ª environmental resources to survive from day to day, and their impoverishment of their environment further impoverishes them, making their survival even more difficult and uncertain. The prosperity attained in some parts of the world is often unstable, as it has been secured through farming, forestry, and industrial practices that bring profit and progress only over the short term.