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数学 高校生

赤く丸をしたbの問題で解答の方に二階微分した後の式がなぜ(-1/4)(-1/4)(H-27)になるのか分かりません。教えてください🙇‍♀️

QA At time t = 0, a boiled potato is taken from a pot on a stove and left to cool in a kitchen. The internal temperature of the potato is 91 degrees Celsius (°C) at time t = 0, and the internal temperature of the potato is greater than 27°C for all times t > 0. The internal temperature of the potato at time t minutes can be modeled by the function H that satisfies the differential equation dH (H- (H-27), where H(t) is dt measured in degrees Celsius and H(0) = 91. (a) Write an equation for the line tangent to the graph of Hat t = 0. Use this equation to approximate the internal temperature of the potato at time t = 3. (b) Use 2017 APⓇ CALCULUS AB FREE-RESPONSE QUESTIONS (a) dH d²H dt² to determine whether your answer in part (a) is an underestimate or an overestimate of the internal temperature of the potato at time t = 3. (c) For t < 10, an alternate model for the internal temperature of the potato at time 7 minutes is the function -= − (G - 27)²/3, where G(t) is measured in degrees Celsius dG G that satisfies the differential equation dt and G(0) = 91. Find an expression for G(t). Based on this model, what is the internal temperature of the potato at time t = 3 ? 564 at (21-27) - == 2-16 To = - = (H(3)-27) 4 -64 = HB)-27 -37 = H (3) (b) _d²fi © 2017 The College Board. Visit the College Board on the Web: www.collegeboard.org. GO ON TO THE NEXT P

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英語 高校生

英表DualscopeⅡのUnit17のexerciseの答えを教えてください。

-EXERCISES A Complete the sentences with the words in brackets. (1) I liked life in Osaka best (I / lived / had / there / for / though) only two years. (2) ( even / you / join / if / the volunteer / do not) club, you can still help in the community. 4372 harde o taborn you de 300 bri (3) (what / matter / we / reason / have / no), we must not start a war. (4) Peter will not take any time off ( of / spite / order / in / his doctor's ). (5) ( of / freedom / is / speech / though / even) the basis of democracy, few people understand what it means. (6)( not / whether / or / computers / like / we ), we cannot imagine life without them. une lis 10 1390.in B Fill in the blanks to complete the dialogs. (1) Satoshi: You've lived in Japan for three years. Have you ever been to Kyoto? Olivia: Yes, of course. I always find something new N 京都でどこを訪れても (2) George: Takeshi seems to have overslept and missed the nine o'clock train! Mika: Oh, no! He won't be on time for the ceremony たとえ飛行機で来ても (3) Kate: Is that man your tennis coach? Fred: Yes. He will be seventy next month, but he is still active He jogs five kilometers every morning. Let's Try ! ALLA sd Illw #2910x3 C Express the following in English. (1)たとえ政治に興味がなくても、選挙権をもつ人は投票しなければならない. (2) 結婚で仕事を辞める女性もいるが,最近ではより多くの女性が定年まで仕事を続ける . _________: 彼の年齢にもかかわらず InT [retirement age ] (3)優先座席であろうとなかろうと,いつも自分の席をお年寄りに譲っている.〔priority seat〕 (4)ユニバーサルデザインの普及にもかかわらず,障がいのある人々が街を動き回るのはいまだに 困難だ.〔universal design, disabled people〕 (5)日本は高齢化が急速に進んでいるにもかかわらず,老人ホームの数が十分ではない。 [nursing home]

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英語 高校生

間違えてるところあったら教えてください💦

□ 19 ( □ 20 ( 21 22 123 □24 □25 □26 □ 27 □28 ) wish to join the tour must gather in front of the station at 8:00 a.m. Anybody (3) Those who 2 Everybody Whoever □ 29 30 ) we go to our friend's house, they entertain us with a lot of food. Wherever (2) Whoever (3) Whenever 4 Whichever You should not do ( what ( I will agree with ( any what (3) ever what No matter ( than ) I had to speak in front of people, I was frozen with fear. Whereas (2) Whoever (3) Whether Whenever 2 that (3) so Mr. Sato is ( what ) you believe is wrong. which Keep on with your studies, ( however ) you decide. ) hard the task is, I'll do my best. 2 as 3 however As is often the case ( doctor arrived. (1) over (2) off 2 whatever Please feel free to contact me. I'm willing to give you ( that which (3) whose ) you call a true intellectual. ko6977 (2) who 3 which anything how He is made much of ( wherever (2) however ) hard it sometimes seems. (2) no matter what 4 whatever ) he goes. (3) to (4) how (3) whether It is often said that rice is to Asians ( (1) how (2) that (4) how what ~との関係は 4 what 4 that (亜細亜大) 4 with ) children, Fred had recovered by the time the (4) whichever <亜細亜大) ) help I can. <亜細亜大) ) wheat is to Europeans. (4) which (PLEX) <大阪学院大) <センター試験> (東邦大) (獨協大) <九州産業大 > <センター試験>

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英語 高校生

空所アについてです。わたしは①を選んだのですが、不正解でした。解説によると、「manyではwhatが導く名詞節全体を修飾できないから」らしいのですが、いまいちピンときません。何故manyじゃだめなのですか?教えてください。

Unit 1 Unit 2 Unit 3 3 H GXJ FIX [人間] 290 words 空所が多めの文は前後のつながりを丁寧に追うこと。 次の英文を読んで, 設問に答えなさい。 出題大学 広島経済大学 制限時間10分 6 p.21 The composer Mozart is famous for showing a talent for music when he was just a small child. However, ( 7 ) Mozart produced in his early years is not considered to be particularly outstanding. He didn't produce his first true masterpiece* until he was 21; pretty s young to be sure, but Mozart ( 1 ) already been composing for years by this time. 10 The figure of 10,000 hours has been suggested as the amount (1 of serious practice or study needed to truly master a skill. That is nearly two hours a day, every day, for 14 years. Natural ability is, of course, an important factor in success, but even someone as talented as Mozart couldn't become a "great" composer until he had put in* 10,000 hours of hard work. The same can be said of golfer Tiger Woods and computer genius Bill Gates. Most people in developed countries can expect to have a healthy life of at least 70 years, or 613,608 hours. Although that seems like a ot of hours, most people spend about a third of them asleep. Take way all the hours we "lose" moving from place to place, eating, etc., well as the time spent at work or school, and the amount of free me we have starts to look quite limited.

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英語 高校生

高校英語です! 回答が合っているか確認していただきたいです! 間違っている場合は訂正していただきたいです! お願いします!!

A空所補充 1. 作家や芸術家によってつくられた創作品が、いわゆる知的財産だ。 図 The products produced by writers and artists are (what) (we) (ca() intellectua property. 2. 彼女の言うことには何でも耳を傾け、話しすぎないようにしなさい。 4 Listen to (what) she says, and try not to talk too much. ever 3. 彼らには戦争をするということがどういうことかわかっていない。 発展 They don't know (what) it (is) (like) to go to war. 4.スターン先生は彼の生徒にだけでなく自分にも厳しいので、好きだ。 5 I like Mr. Stern because he is strict (not) (only) to his students (but) (also) to himself. 5.パスワードを忘れたらいけないので,他人が見られないところに書いておきなさい。 函 Write the password down where others can't see it (in) (case) you should forget it. B 整序完成 6. たくさんの困難を経験してきていたので、彼は今では勇敢で自信があるように見える。3 [ so many / gone / having / through / hardships ], he now looks brave and confident. Having gone through so many hardships, he now looks brave and confident. 7. 私の幼い娘は小さい唇を突き出して, 私にキスしようと近づいてきた。 41 発展 My little daughter came up to kiss me [her / with / little lips / stuck out ]. My little daughter came up to kiss me with her stuck out little lips 8. そういうわけで,私は彼女に結婚を申し込んだのだ。 46 ☆ / to / me / her / why / asked / that's / marry ]. That's why I asked her to marry me C 英作文 9. 彼女の話し方から判断して、彼女は嘘をついているようだ。 40 Judging Prom the way she speaks she seems to be lying. 10. ジェーンが食べているものと同じケーキが欲しい。 あのチョコのメッセージの乗った大きい ケーキ。 48 I want the same cake as the Jane is eating eating That big cake with the chocolate message on it. A

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