⑵はなんの公式を使ったのですか？教えて頂きたいです。よろしくお願いします

AABCIにおいて AB = BC-|3 ACEIのてき、こ欠のものを め Iし 1 4 so5 LABCの値 cos 4 ABく 9t9 C 2 3 3 147 3.3 7 13 3 B 2 A (2)AABCの面種 sin 4 A BC 42 9 9 AA BIC 3 3 9 3)AABCOのタ外接円のギ径 Ac 2 2R R 2 sinlABC 2 42 8 11 1

明日提出なのですが、まったくわからないです！ 出来れば早めに教えて欲しいです🙇‍♀️

p:ad bno yi On the morning of that day, a big bomb fell on the city of Hiroshima.- Many people lost their lives, and many others were injured. They had burns all over their bodies. was very sad when I saw those people. It was a very hot day. Some of the people fell down near me. I said to them, “Come and rest in my shade. You'llbe all right soon." Night came. Some people were already dead. I heard a weak voice. It was a lullaby. Ayoung girl was singing to a little boy. “Mommy! Mommy!” the boy cried. “Don't cry,” the girl said. “Mommyis here.” Then she began to sing again. She was very weak, but she tried to be a mother to the poor Ilittle boy. She held him in her arms like a real mother. 1. Where did the big bomb fall? 2. Where did some of the people fall down? 3. Who was singing a lullaby? 4. Was the girl the real mother of the little boy?

33番の解説お願いします、答えは２でさ

Grade Pre-2 次の英文[4,回の内容に関して、(31)から(37)までの質問に対して最 4 も適切なもの、または文を完成させるのに最も適切なものを1,2,3,4 A の中から一つ選び,その番号を解答用紙の所定欄にマークしなさい。 From: Daniel Price <daniel.price @greenvillehigh.edu> To: Barbara Floyd <barbara.floyd@greenvillehigh.edu> Date: Januanry 24 | Subject: Bake sale for Africa Hi Barbara, This is Daniel Price, the student president at the school. How do you like being the editor of the school_newspaper? I really enjoy reading the articles, and it's full of useful advice and information for students and parents. Actually, that's why I'm writing to you. Our school will be holding a charity event soon, and I want to let people know about it. The event will be on Saturday, March 20, from9 a.m. to 2 p.m. The school's cooking club is going to have a bake sale in the school gym. The members are going to bake many kinds of cakes and cookies and sell them to visitors. The money we get will be used_to help build schools for students in Africa. The art club is also designing posters and T-shirts for the event. T have written a short article about the bake sale. Can you put it in the newspaper? That way, we will get a lot of visitors. When you have some free time, I will bring it to the newspaper office. We can look at the article together and make any necessary changes. Please let me know when you are available. Thanks, Daniel (31) What does Daniel want to do? Let people know about a charity event. Write articles for the school newspaper. 1 2 3 Give some advice to high school students. 4 Offer Barbara a job as an editor. (32) The school's art club will 1 give lessons for students in Africa. 2 draw a sign for a new bakery. 3 make some special T-shirts. 4 design cakes for the cooking club. (33) What does Daniel ask Barbara to do? 1 Write about a recent school event. 2 Put an article in the school newspaper. 3 Check a short story for English class. 4 Bake a cake for him in her free time. 220年度第3回検定一次試験(準2級)

このマーカー部分の文、おかしいですよね？？ 訂正お願いしたいです💦(字汚くてすみません笑)

スず YABFとA DEFにかいてい 1 キ7回ア形の2組の対返けるれでが等しいからABDC@ 仮定まり CD=DE OrOよ AB = DE -® 確よ1 ある 1 手行回 迎形の2組の対理は3 ひぞん行でから、CEはとDの基を領であ AB/ECより第角が多しいかは、LABF =CDEF 2 BAF=LEDF ③ :、①より 1組の逆とその商第の角がそひぞよれ等いのてい AABFシ△1EE

クとケが分かりません。 解答のR=AP／2sin∠ACPから R=7AP／3‪√‬3 のところの考え方を教えてください🙇‍♀️

入試 1300 AABC において, AB =D 3, BC = 5, ZABC 入試 120° とする。 ニ このとき,AC=[ア], sin LABC, = エオ カキ |イ である。 V ウ であり,sin ZBCA = 直線 BC上に点Dを, AD = 3,/3 かつ ZADC が鋭色となるようにとる。点を除力 の点とし,△APC の外接円の半径をRとすると,Rのとり得る値の範囲は | ク <RSロ ケ である。 (センター試験

数学I🐸 解説よろしくお願いします

4AB=5v2, BC=7, LABC=135° の△ABCがある。点Bから辺ACに垂線を引き辺ACとの交点をDとする。 このとき, 次のものを求めなさい。 (1) 辺ACの長さ (2) AABCの外接円の半径 cos Z ACB (4) AD:DC

1枚目の画像の⑵なんですけど、 2枚目の画像の赤の線のとうりにa=6にして必ず整数にした方がいいですか？a=1ではだめでしょうか？

376 一数学B 開空 PR 70 次の3点の定める平面をαとする。点P(x. y, 2) がα上にあるとき, x, y, スが満たす関係式 を求めよ。 (1) 平面αの法線ベクトルをn=(a, b, c) (n+0) とする。 B(-2, 0, 3), C(4, 5, -2) とすると 2

この教科書のレベルはどのくらいですか教えください この教科書でどのくらいのレベルの大学まで対応できますか？

1 On 10 February 2009, at a height of about 800 kilometers above Siberia, an American satellite collided the first such height [háit] satellite [séetalait] collide(d) [kaláid(id)] with an old Russian satellite. It was collision [kaligan] collision in the history of space development. As a result, fragment(s) [fráegmant(s)) debris [dabri:] more than 1,000 fragments of debris were scattered into space. 2 The image above shows the vast amount of space debris in orbit around Earth. Approximately 22,000 vast [váest] orbit [5:rbat] approximately [aprá:ksamatli) objects larger than 10 centimeters across are floating around Earth. Of these, about 16,000 are from known 10 considering [kansidarig) artificial [a:rtafijal] currently [ks:rantli] operation [a:paréifon] Considering that there are only about 1,000 artificial satellites currently in operation, the amount of Sources. space debris is astonishing. This space debris is not only due to the collision of satellites. For example, when rockets reach space, they s 15 leave behind surplus engines and fuel tanks. These objects remain in orbit as space debris. In addition, surplus s5:rplas] there are tools that astronauts have dropped while tool(s) [t:l(z)) astronaut(s) [astrand:t(s) aluminum [ala:manom per|par] working outside. Even a one-centimeter aluminum ball. when orbiting at a speed of around 10 kilometers per 0 bullet [bálat] second, is far more powerful than a bullet from a gun. gun [gán]

この白丸のところがなんでこーなるのか分からないのですが…

基本例題 29a 次の不等式を証正明せ。 (1) la+b|Sla|+||| の証明(絶対値と不等式) 0OOOOの 47 (2) lal-|6|Slaーb か.基本事項6,基本 28 CHART OSOLUTION 似た問題 1結果を使う (1) 絶対値を含むので、このままでは差をとりにくい。IAPーAを利用すると。 絶対値の処理が容易になる。よって、平方の差を作ればよい。 (2) 不等式を変形すると そこで、(1)の不等式を利用することを考える。 2 方法をまねる la|sla-b+b|i ()と似た形 山の方針 解答 の(1) (lal+|bD"ーla+bF=(laF+2|a||6|+|6})-(a+b)° In A20 のとき ーIASA-AI A<O のとき ーIA|-A<IA であるから、一般に ー1A|SASIAI 更に、これから 「A-A20, A|+A20 =a+2|ab|+6ー(α'+2ab+b) =2ab|-ab)20 …0 Ja+bPs(la|+|60 la+b|20, Ja|+6|20 であるから la+b|<lal+|| 別解 -la|Saslal, -l6|<6s6|であるから よって さ -(al+|b)Sa+bslal+|| la+b|<la|+|b| 辺々を加えて lal+|b|20 であるから (2)(1)の不等式の文字aを a-bにおき換えて -cSxSc→x|Sc xS-c, cSx la|sla-b|+|b| la|-|b|S|a-b| よって ゆえに の方針。lal-b| が負 の場合も考えられるの で、平方の差を作るには 場合分けが必要。 inf」等号成立条件 (1)は①から、labl=ab, すなわち、ab20 のとき。 よって、(2) は(aーb)b20 (aーb20 かつ bこ0) または(aーbS0 かつ bS0) 別解 [1] |a|ー|6|<0 すなわち la<lb| のとき (左辺)<0,(右辺)>0 であるから不等式は成り立つ。 [2] |a|-|b|20 すなわち |a三6|のとき la-bP-(lal-|6)"=(a-b)?-(α°ー2lab|+ 6) =2(-ab+lab|)20 (lal-|b)?Sla-bP la|-|b|20, laーb|20 であるから lal-|6|<la-b| よって ゆえに すなわち a2b20 または aSbS0 のとき。 PaacTiCr.

下線部が上手く訳せません。

64 演習 54(問題→本冊: p.109) [amsldong [VIpon@p… uordilA) あケ2moldorSetnisfamo 店 Through conquest and acquisition the strong overpowered the weak and made slaves of the people. Those who were made slaves and serfs were compelled, through forced labor, to work for their masters and lords upon such terms and conditions as the owners and lords fixed for them. 【全文訳】征服と獲得によって強者は弱者を制圧して彼らを奴隷にした。 奴隷や農奴に された人々は,強制労働を通して, 自分たちを所有している人々と領主が奴隷 農 奴である自分たちに押しつけた条件で無理やり働かされた。 の #出と