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数学 高校生

Practice54 「2」の問題です。逆の平行移動についてよく分かりません。模範解答にはx軸方向に−2、y軸方向に1だけ平行移動すると、求める放物線になる。そこまでは分かります。 ですが代入するとy−1=−2{x−(−2)}^2+3 のy−1になる理由がわかりません。誰か... 続きを読む

(2) 放物線 y=-2x²+3 を (3) x軸方向に -2, y 軸方向に1だけ平行移動する と 求める放物線になる。 ゆえに よって y-1=-2{x-(-2)}2+3 y=-2(x+2)2+4 y=-2x²-8x-4 でもよい) PR物線y=2次線または関して それぞれ文移動して得られる放物 56 線の方程式を (13) (y=x²-8x. INFORMATION グラフの y=f(x)のグラフ上の点(X, 1 とき, x=X+p, y = y + q から X=x-p, Y=y-q 点(X,Y) はy=f(x) 上にあるから Y=f(x)が成り 立つ。この式のXに x-p を Y に y-g を代入すると, 移動後の曲線の方程式 44 逆の平行移動を考え て, 放物線 y=-2x²+3 をもとの位置に戻す。 原 y-q=f(x-p) ←y+q=f(x+p) ではない! すなわち y=f(x-p) +α が得られる。 y=-2(x2+4x+4)+4 y=-2x-(y=-2x y=f(x) x (X,Y) P 0 ((x,y) P RACTICE 54② (1) 次の直線および放物線を, x軸方向に -3, y 軸方向に1だけ平行移動して得られ る直線および放物線の方程式を求めよ。 (ア) 直線 y=2x-3 (イ) 放物線 y=-x²+x-2 (2) x軸方向に 2,y 軸方向に-1だけ平行移動すると放物線y=-2x²+3 に重な ような放物線の方程式を求めよ。

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英語 高校生

英語の問題教えてください。 「英文法から学ぶ英作と読解」というテキストからです。 写真の問題を教えて頂きたいです。 解説や覚えておいた方がいい所などありました、そちらもよろしくお願いします。 写真と問題を書いておきます。 問題文を書いておきます。 1 次の質問に英語... 続きを読む

.... Reading Comprehension II 次の文章を読み、 後の問いに答えなさい。 Rakugo is a form of traditional Japanese spoken entertainment. It first became popular among people of the merchant class "chonin," and also spread to the lower classes during the Edo period. 16 A single rakugo performer appears on stage and kneels on a cushion. The performer wears a traditional Japanese kimono and usually has nothing except two stage properties: a paper fan and a hand towel. The fan can be used to represent a variety of things, such as a pipe, chopsticks, a pen, a fishing pole or a cup. Sometimes it creates sound effects. The hand towel can be used for things like a letter, a book or an actual towel. The comic story, which the performer narrates, is usually in the form of a conversation between two or more characters. The storyteller plays the two or three roles fluently and switches from one character to another by changing his voice, accent, or expression and turning his head, so the audience can imagine the scene. In the Meiji period, a British rakugo performer brought a lot of excitement to the audience. He was the first foreign-born rakugo perfomer, named Henry James Black, who adopted the stage name "Kairakutei Black." Everyone had a good laugh at hearing his comic tales and his fluent Edo dialect. 注 kneel on a cushion 座布団に座る sound effects have a good laugh at 〜 〜 に大笑いする

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数学 高校生

(2)についてなのですが、私の回答が間違いなのはなぜでしょうか?

No. Date (3) 56. 5m (1全体の数をxとする 6cm 5 H 6 r [n]]]] Date. 200 Aの個数は G.7x Aの不良品数は0.3.0.7x Bの個数は0.3x Bの不良品数は0.3x-0.05. よってP(E) (2) PE(A) = 0.03.0.7x+0.3x20.05 XCI =0.02x+ こ JJ = = XC₁ 0.036x÷x 36x 1000 250 9 250 WER 0.0.15x 21 x PE (A) = 0.021 x ²9 256 1000 PCEDA)なので、DF(A)=0.021x PETA) PE) 1,000 1 1 x P(A) O 1000 250 ス・x KRENAL PCEVA) 7x 12 (P(E) 56 原因の確率 基本例題 ある部品を製造する機械 A,Bがあり、不良品の発生する割合は,Aは3 58では5%であるという。 Aからの部品とBからの部品が7:3の割合 00000 ※大量に混ざっている中から1個を選び出すとき、それが不良品であるとい う事象をEとする。 (1) 確率P(E) を求めよ。 (2) 事象Eが起こった原因が,機械Aにある確率を求めよ。 OLUTION CHARTO 事象 E (結果) を条件とする事象A (原因) の起こる確率 P(ENA) P(E) Bの製品であるという事象をBとすると 3 10' 条件付き確率PE (A)= (1) 排反な事象に分解して求める。 (2)「不良品である」ということがわかっている条件のもとで、それが機械Aの製 品である確率(条件付き確率)を求める。 解答 選び出した1個が, 機械Aの製品であるという事象をA, 機械 inf. 次のように、具体的 3 100' 47,P(B)= PA(E)=- PB (E) = 10' 5 100 P(A)=- 不良品には,機械Aで製造された不良品と機械Bで製造さ れた不良品の2つの場合があり,これらは互いに排反である。 P(E)=P(A∩E)+P(B∩E) よって =P(A)PA (E)+P(B)PB (E)= (2) 求める確率は PE (A) であるから P(ENA) P(ANE) P(E) PE(A)= P(E) 7 3 3 100 10 × + 10 20956 × ÷ 7 12 9 21 250. 1000 9 5 100 250 <INFORMATION 原因の確率 上の例題 (2) は, 「不良品であった」という“結果”が条件と して与えられ、「それが機械Aのものかどうか」という“原 因” の確率を問題にしている。 この意味から (2) のような 確率を原因の確率ということがある。 基本53 な数を当てはめて考えると, 問題の意味がわかりやすい。 全部で1000個の製品を製 造したと仮定すると 機械 製造数 不良品 A 700 21 B 300 15 計 1000 36 (1) の確率は (2) の確率は E 21 E 317 1000 36 1000 241 250 A B ANE BOE 9 3 250 200 2章 9 250 21 7 36 12 6 条件付き確率 確率の乗法定理 PRACTICE・・・ 56 ③ ある集団は2つのグループA, B から成り, Aの占める割合は40 「生したときに, 選び出された1個がBのグループに属している確率を求めよ。 %である。 また, 事象Eが発生する割合がA では 1%, B では3%である。 この集 団から選び出した1個について, 事象Eが発生する確率を求めよ。 また、事象Eが発

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英語 高校生

お願いします

1 Today, Taylor Swift is one of the most popular singers in the world, and is also al cover model for fashion magazines. But she was not always so popular. 2 Taylor Swift began singing country music in Pennsylvania when she was eleven. Country music is an older form of music in the USA that is usually enjoyed by 5 adults. Maybe this is why other kids at her school thought she was strange for stopped calling her. singing country music. Over time, these friends 3 One day, she invited many of her friends to go to the shopping center, but all of them said they were busy. So, Taylor went with her mother. When they got there, they saw all the girls shopping together without Taylor. Soon after that, Taylor 10 began eating lunch at school alone. (1): 4 Taylor asked her parents to take her to *Nashville, a city in Tennessee where many country singers and musicians worked. Her parents decided to move there to help her make her dream come true. Taylor's parents were right to believe she could succeed. At age fourteen, she got a contract with RCA Records, a major music 15 company. 5 RCA wanted Taylor to sing other people's songs until she was an adult. Taylor “ did not like this. She wanted to write and sing her own songs about her life and the boys she dated. The record company did not think older country fans would want to hear (3)a teenage girl talk about her life. 6 Taylor left RCA and joined a smaller record company that released her records. Her music became very popular with teenagers as well as older country music fans. Soon, Taylor was considered a major pop star, and young people who did not normally listen to country loved her music too. 5 7 One day she returned to Pennsylvania to do a concert. Girls from her old school came to the concert and were excited to see her. They treated her like a star, and seemed to have forgotten that they had stopped talking to her in junior high school. 20 Taylor realized her life had changed. (4) * Nashville + VIEN

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英語 中学生

英検対策の問題です。 中1なのですか分からないとこばっかりで…。 解説も出来れば、出来ればでいいので お願いします🙇‍♀️⤵️

13 (1) から (15) まで ( 1つ選び、その番号のマークをぬりつぶしなさい。 (2) (1) A: Mike, have you called Jill to tell her about our meeting tomorrow? B: No, not ( 1 yet ―次試験 筆記 ). I'll call her after lunch. 2 over 3 always Brian is going to visit the (> ) with his class next week. He wants to see many kinds of fish there. 1 college 4 garage 大学 EL (3) A: These are delicious tomatoes. B: Thank you. We ( 1 grew に入れるのに最も適切なものを 1,2,3,4の中から 2 aquarium 3 stadium *17 (7) A: It's so hot! 2 thought 2 special (6) Helen and Yumiko ( they're good friends. 1 put (4) Jeff went fishing on Sunday. He caught nine fish. One was very big, but the () were small. 1 another 2 ones 3 others 4 sometimes (5) A: I heard that you're going to Rome next week. B: That's not ( ). I'm going to Paris. 1 true 2 thought ) them in our garden. 3 fought 4 knew 4 all 3 met 3 common 4 main 3) in the tennis club at school. Now 4 found B: Here, use this (2). It will cool you down. 2 fan 3 hill 71% 1 line 4 head 頭 75 78 (8) People think I can speak French because my mother is from France. But (A ) fact, I can only speak English. 1 by 2 on f 3 for 4 in (9) The rock group was very popular, so the concert hall was 3) of people. ( 1 thick 2 full 3 deep 4 high (10) Lisa and her family didn't go ( planning to go on a trip this year. 1 away 2 at B: OK. 1 pass (11) A: I told my mother that I would be home by 7:00. I don't ) my promise, so I have to go now. want to ( 2 se 4 lend 2 color 3 through 4 behind (12) Jim bought a new house, so he had to move his things. All his friends were on vacation, so they couldn't give him a (/). 1 part ) last summer, so they're 3 break (13) A: Excuse me. Could you tell me ( map? 2 won't 3 front (14) A: Jack is a police officer, (3 B: No, he's a doctor. 1 isn't 2 to teach B: Sure. There's a bookstore on the fifth floor. 1 which 2 why 3 what 4) I can buy a world ) he? 4 hand 3 doesn't 3 teach 4 where 4 can't (15) I can't ride a bike, but my brother can. I asked him (3) me. 1 teaches 4 taught 19年度第1回 記

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