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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

まるをつけてる所を特に教えて欲しいです🙇‍♀️できれば他のところも間違ってるところがあったら教えて欲しいです!

主語を決める Lesson 1 1 日本語に合うように,( )に適切な語を入れなさい。 1. 君の笑顔はすてきだ。 (広島国際大 *) )( have. 2. 日本の天然資源は豊かでない。 ( Japan 3. 先日、私のコンピューターはどこか具合が悪くなった。 (成蹊大*) (Something) ( went :) ( wrong ) with my computer the other day. 4. 夏休みが始まるまでにまだ1週間あります。(摂南大*) is ) still ( There ( )( week 66 ) a nice (smile (西南学院大 * ) ). 形 ) ( is )( not i) rich in natural resources. ) to go before the summer vacation begins. 2 日本語に合うように,( )に適切な語を入れなさい。 1. カナダでは何語が話されていますか。(中部大*) What language ( ) ( is 2. 今年はいつもよりずっと雨が多い。 (愛知学泉大*) (We )( have :) ( had 3. 昨日から食欲がなくなってしまったんです。(関西学院大 *) I )( have )((ost 4. 中間テストのできは良くなかったね。 (順天堂大 *) (You ) didn't ( do ) ( well ) on the mid-term exams. 5. この道をまっすぐ行くと, その銀行は右にあります。 (東京理科大 * ) Go straight down this street, you :)( will )( find )(spoken ) in Canada? ) more rain than usual this year. Jan appetite since yesterday. ) the bank on your right. 3 日本語に合うように, 下線部に適切な語句を補いなさい。 1. 「今, 雨が降っていますか。」 「はい, すごく降っていますよ。」 (三重県立看護大) Is it raining. now?" "Yeah. it is 2. 暗くなる前に必ず戻ってきなさい。(つくば国際大*) raining really hard." Be sure to come back before it gets dark. 3. あなたと最後に会ってからどれくらいたちますか。 ( 広島経済大 * ) How long has it been since I saw you last? 4. 外は寒いのでコートを着るようにメアリーが言ってくれました。 (龍谷大*) Mary said I should wear a coat as it was cold out. 5. いちばん近いコンビニエンスストアまでどのくらいの距離がありますか。 ( 足利工業大 *) How far is it to the nearest convenience store? 6. 我慢できない,もしくは不快感を表す場合, 「我慢できない」 と言う。(駒澤大 *) When you want to express impatience or annoyance, you say, ". I can't stand it."

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英語 高校生

英語の文法についての質問です。 一枚目と二枚目の緑の蛍光ペンを引いたところなんですが合っているかどうか確認していただきたいです。 三枚目にさんこう資料を載せてあります。 お願いします🙇‍♂️

CUTTING EDGE 1-03 英語の変遷 言語に関する面白いことの1つはそれが時とともに変化していくさまである名A (1) One interesting thing about languages is the way that they change over time. In English, everything from spelling to vocabulary 熟を経験する to ①pronunciation has ②gone through major changes over centuries. In fact, to a modern speaker, the English of 1,000 years ago is like a foreign language! 熱にさかのぼる 当時、 The history of English ③dates back around 1,500 years. (2) At ヨーロッパの複数の集団がイランドeans ④inaded England, bringing their that time, groups of Europeans 副詞M 一面に侵入する。 languages with them. These ⑤gradually developed into Old English. だんだんと. Later, in_1066, England was invaded by the Normans, from France. これによってその言語に重要な変化がもたらされ、今日我々が中英語と呼ばれる (3) This caused the language [go] through an important shift, leading to 関係詞ものになった。 続く500年以上の間、その言語は what we now call Middle English. (4)Over the next 500 years, the さらなる変化を経て最終的に近代英語へと変化した。結局は 回進化する language ⑥underwent ⑦ further shifts, ⑧eventually Devolving into ~続する 脳されんだ 英語が現在に至るまで発展する間に Modern English [evolvingの用法】 (5) As the language has developed 「接続」 多くのことが変化した down to the present day, many things about it have changed. 明白な Pronunciation is one of the most obvious areas of change. For example, in Old English, people said “hus” and “mus.” Now we say 最近では、アメリカ、イギリス、オーストラリア、そして他の地域での "house" and "mouse." (6)These days, there are also many differences 英語の発音の名Aしかたにも効くの違いがある。 in the way that English is pronounced in the USA, the UK, Australia. どこかその他の所で、 and Welsewhere. When people who speak the same language live in BE AE places separated by great 12distances, the language undergoes 13rapid changes in each place. 囲急速な Spelling has also gone thorough interesting changes. For example, in Old English, people wrote "riht." A "g" was added in Middle English, making the spelling "right." Also, in the ④4 distant 18世紀および past, people did not always follow standards of spelling. (7) In the 18th 学者のような学者たちが辞書を著し、英語のつづりをより 19世紀に(アヴェブスター and 19th centuries, scholars like Noah Webster wrote dictionaries 形一貫性のあるものにした。 FRED 貫した that made English spelling more 1⑥6 consistent. But different standards were decided on in England and the USA, so some differences remain - for example, "color" vs. “colour.”

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英語 高校生

教えて欲しいです🙏 よろしくお願いします。

【5】 次の対話の下線部 1)~6)の意味に最も近い語(句) をa~dから選びなさい。 JANE: Hello, Peter. How's your new job going? PETER : Hi, Jane. Oh, It's a breeze! I choose my own teaching hours, and the students are enthusiastic, too. It's so much better than my last job. JANE: That's great. So, do you have plenty of classes? PETER: Yes. And, 3)as luck would have it, I can teach subjects that I enjoy. JANE: Oh, really. Does the principal give you any trouble? PETER: No. But she did ask me to help with the science club after school. However, I 4)turned her down. JANE: Oh! Do you think that was a good idea? Shouldn't you keep on good terms with her? PETER: I didn't think of that. Do you think I should speak to her again? JANE: Well, I would if I were you. You want to make a good impression, don't you? PETER I certainly do! Thanks for your advice. I'll call her tomorrow. JANE Good idea. Let me know what happens. 1. a. very difficult c. not so easy a. better paid than c. a lot worse than 2. 3. 4. 5. 6. a. not by chance c. luckily a. refused her c. a. stay for the term with c. teach for the terms with couldn't decide a. do good deeds c. create a good image b. very easy d. a little windy b. not as bad as d. an improvement on b. unluckily d. happily b. asked her for time d. accepted b. stay friendly with d. stay away from b. have a good idea d. leave an impression

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英語 高校生

(A)の問題の(1)~(6)までの答えと訂正した回答を教えてほしいです。よろしくお願いします。

【4】 次の設問 (A), (B) に答えよ。 (配点 30> (A) 次の(1)~(6) の各英文には、下線部ア~エのいずれか1つに文法・語法に関して不 適切な あるいは文意を通らなくする箇所が含まれている。 その下線部の記号を記せ。 ア (1) It is estimated that the surface temperature of our planet has been risen by about half a degree Celsius, compared to a hundred years ago, and some scientists believe it's going to get warmer yet in the years to come. (2) In English-speaking cultures, children are often told to say "please" when asking for something. By so doing, they are more likely to be given イ permission than they do not. If they don't, their parents give them a hint, by asking them " What's the magic word?" Trying to forecast weather is incredibly complicated. Some scientists P believe that no matter how advanced science is, weather is impossible to イ predict it accurately, because there are too many random elements involved. (3) Inuits are a related group found in Alaska, and also in Canada and Greenland. They are thought to have spread into North America from Siberia many thousands years ago. In both the US and Britain these people are ウ often called Eskimos but the name Inuit is now preferred and is becoming more widely used. 5) The Cold War is a term for the political conflict between the capitalis countries of the West and the Communist countries of the East that begar 7 after World War II. Both sides had large military forces which were kep イ ready for war, and threatened at each other with nuclear weapons. I

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英語 高校生

この英語の問題がわかりません…… 分かりやすい解答とこの問題の問題集を教えてくださると嬉しいです!

DAY2 文法・語法・語彙 ■4】 次の設問 (A), (B) に答えよ。 (配点 30 ) (A) 次の(1)~(6)の各英文には、下線部ア~エのいずれか1つに文法・語法に関して不 適切な あるいは文意を通らなくする箇所が含まれている。その下線部の記号を記 せ。 to consult → consult (1) Electronic dictionaries enable us not only to search words we want to find out the meaning of very quickly but also to consult several dictionaries at the same time. My I- 3 or T (2) I recently moved to a new neighborhood. The reason is why I wanted to p live close to my office. Now I can walk to the office within 20 minutes, which イ近くに住んでる. ウ makes my life easier and less tiring. (3) When you shop for a smartphone, having many options are great, but it might make it difficult to figure out which ones have the features you'll actually use. (4) Because there is so much personal information readily available online, it is far easier now than the past for criminals to steal others' identities. (5) Personally, I am against the idea of sending aging parents to nursing facilities because I have long convinced that home is where they feel happiest. (6) Nowadays people are talking about the possibility of e-sports, a term_referring to organized, competitive computer gaming, will become an Olympic spom in the near future, though some doubt if it deserves to be one. ェー

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