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英語 中学生

至急 問1教えてください!

3 次の英文を読んで、後の各問に答えよ。 Hiroshi is a junior high school student. One day in an English class, his teacher said, "We have many kinds of new technology around us. Computers, the Internet, and AI are good examples. Do you know any people who use them well? In our next project, I want you to introduce one person in class." So at home that night, Hiroshi asked his mother, and she said to him, "Your grandmother, Toshiko, uses new technology well." A few days later, Hiroshi talked with Toshiko on the Internet about the project. She said, "Well, you know I am a fruit farmer. I didn't use technology very much in the past. But now, I use it every day. There are many benefits of using new technology. I collect information about the weather from websites. I can understand my fruit's growth by keeping records and can share that information with researchers and farmers who live in other parts of Japan. Then I can get good ideas from them and make my fruit bigger and better. Now I don't need to give water to my fruit trees because AI technology can do 2 that job. Also, it is easy for me to sell more fruit by using the Internet. In these ways, new technology has changed my way of working and made it better. On my website, I show other farmers how to use new technology which helps us grow better fruit." Hiroshi decided to talk about her to his classmates. A month later, Hiroshi made a speech in front of his classmates. After the speech, his classmate, Asuka, said, “In your speech, I like the story of your grandmother's website. She shows her ideas about using new technology for agriculture. I hope people will be interested in her website. If they see it, they will learn her ways to grow fruit. Then, they will be influenced by her and start working like her. I really respect her." Hiroshi was very happy to hear that. He said to Asuka, "Using new technology in effective ways has been changing the lives of many people. I want to learn about this more and create a better society in the future." 受羽課題 プロジェクト

未解決 回答数: 1
理科 中学生

②と④教えて下さい!

VI 中学2年生のけいこさんは, 校内に掲示されている 「数学 理科甲子園ジュニア」 のポスターを見 · ながら, ALT(外国語指導助手) のスミス先生と話をしています。 下線部 ① ~ ④ について, それぞ れあとのア〜カの語句を並べかえて ( )に入れ、会話文を完成させなさい。 解答欄には, (A) ~ (H) に入る語句の符号を書きなさい。 Mr.Smith: Hi, Keiko. What are you looking at? Keiko: Hi, Mr. Smith. It's about a science and math contest. Mr.Smith: Will you tell me more about the contest? Keiko: Sure. Junior high school students ②( )(C) ) ( )(D)( )the contest. Mr.Smith: That means you can help each other. How will you (H) ( )? (1 Mr.Smith: Oh, really? If you like science, you should try. Keiko: Yes. To enter the contest, Ⅰ have to make a team of three students. The questions )(E)()()(F)(. (2) My teacher()(A)()()(B) ( )knows I like science. I think I will enter the contest. (3) (4) Keiko: Well, I will ask some of my friends. I think Misaki and Shota will go with me. Mr.Smith: Do your best! (注) contest 大会 enter 申し込む do one's best 全力をつくす アアアア 7 he イ ウ to in イ who ウ are イ be ウ as イ ウ find a to me you 数学・理科好きの中学生 集まれ! 数学・理科甲子園ジュニア 県内の中学生が, 数学 理科におけ る競技で科学の知識やその活用力を 競い合います。 1期日 〇月△日 1会場 □□大学▽▽キャンパス ■日程 午前:予選 ( 筆記競技) 午後: 決勝 (実技競技 ) エtry エ join エ must I help 6 ■競技方法 チーム対抗戦 team other 1チーム3名で問題に挑みます。 オ told オ interested オ オ ) (G) ( )( 力 because 力 science and math カ answered students カ

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数学 高校生

青チャート数1のEX78の問題です。(2)の解答の3行目からが理解出来ません。詳しく説明していただけると幸いです。

EX 2次関数y=ax²+bx+cのグラフをCとする。 C をx軸方向に3,y 軸方向に5だけ平行移動 REG ③78 2307-110 したグラフをCとする。 C を表す2次関数がy=ax²+ (2a+2)x-3a+1であるとき (1) 6,c をaで表せ。 [京都学園大] 豊線(2)がx軸から切り取る線分の長さが y=ax²+bx+cは2次関数であるから a=0(8) - JUNONE (1)Cをx軸方向に3,y 軸方向に5だけ平行移動したグラフの y=f(x)のグラフをx 軸方向に p,y 軸方向に 式は say-5=a(x-3)²+b(x−3)+c gだけ平行移動したグラ すなわち y=ax²+(b-6a)x+9a-36+c+5 の式は このグラフが C と一致するから, 係数を比較して y-q=f(x-p) b-6a=2a+2,9a-36+c+5=-3a+1 よって b=8a+2, c=-12a+36-4=-12a+3(8a+2)-4=12a+2 (2) ax²+2(a+1)x-3a+1=0の判別式をDとすると D=(a+1)²-a(−3a+1)=4a²+a+1 2 = 4( a + ¹² ) ² + EX ②70 (*) よって, D>0は常に成り立つから, C'はx軸と異なる2点で 交わり, そのx座標は ax2+2(a+1)x-3a+1=0を解いて x= 15 _______−(a+1) ± √√4a²+a+1¹ 16 a E+ ゆえに,放物線 C' がx軸から切り取る線分の長さは a 19であるとき,αの値を求めよ。 2√4a²+a+1 |a| -(a+1)+√4a²+a+1___(a+1)-√4a²+a+1 よって, 条件から ゆえに 4(4a²+a+1)=19α² ゆえに (a−2)(3a+2)=0 2√4a²+a+1 lal 0&Aca == √19 よって よって (1) 放物線y=-x2+2(k+1)x-k²が直鎖 を求め 3a²-4a-4=0 a=2, 2 3 ←C' がx軸と異なる2 点で交わることを確認し ている。左 x-(a+1) ± √ X3 D ac 根号内は, (*) と同じ計 算になる。 OSIS ←絶対値をつけて表す。 X3 ←両辺を平方して、分母 を払う。なおc=d

未解決 回答数: 1