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

写真(URL)の問題の(1)についてですが、 円c1は 2点を通ると書いてあることから、 2点の座標をそれぞれ円の方程式に代入したものを連立して中心の座標を求めようとしました。 連立方程式を引くことで、b=-3と中心のyは求まったのですが、中心のxの値が 最初に立てた連立方... 続きを読む

円は、1,2,-1),(-2,-5)の2点を通るから、 20bf (-2-a) ²4 (-1-b) ² = ²₁ (1) elersitel(-2-a)'+(-5-b)^2=12 -2-0)² ² Ⓒ ut lost as bodoorzo blida downl hat pode bas blower ads inothis and ality of allarion ①-②より、b=-3が求まる。 を満たす inderlyrirlsanood or held at this thing ist mit barqaba) entity to elinceuort この先のひの求め方がわからない。

丸をしたnoteのこの文での日本語訳を教えてください。

years ago. A severe economic slump and a decline in GDP that occurred during that time lowered the starting salaries of all college graduates regardless of major. In 2015, the economy had recovered and the average starting salary for a business major was about 15 percent more. It's interesting to note that since the year 2000, accounting majors started being hired more, and started receiving higher starting salaries. This is because of government laws that required より厳しい 会計業務 stricter accounting practices, following several corporate accounting scandals in that year. のために, 生の初年俸が下がってしまいました。 は,経済は回復し、経営学専攻学生の平均初年 棒は,約15%増えていました。 興味深いことに, 2000年以来,会計学専攻学生は雇用が増え始め、 より多くの初年俸をもらうようにもなりました。 これは,その年に起こった企業会計をめぐるい くつかのスキャンダルを受けて,より厳しい会 計業務を求めるようになった政府の法律のおか です｡ ☆学生を見てみましょ

この問題の解き方を教えて欲しいです。線速度と角速度に関するものです。

Daviu L activ 4. Lawn Mower Blade Problem In order for a lawn mower blade (Figure 4-4f) to cut grass, it must strike the grass with a speed of at least 900 in/s. If the innermost part of the cutting edge is 6 in. from the center of the blade, how many radians per second must the blade turn? How many revolutions per minute is this? b. The blade has a diameter of 19 in. If the out- ermost tip of the blade hits a rock while turn- ing as in part (a), how fast could the rock be hurled from the mower? T6" 4 19" 6.

教えてください😰😰

22 TRY! 次の英文を受動態の文に書きかえなさい. My father taught me shogi. I ( ) () shogi by my father. 2 We named the little dog John. The little dog was ( )(). 3 The result of her exam satisfied her mother. Her mother was ( ) ( ) the result of her exam. 4 Emi looks after the cat. The cat is ( ) ( ) ( )by Emi. 5 Snow covers the roof of his house. The roof of his house is ( What's this called ? ) ( ) snow. ● ● ● ポ 0 ● ・ ● · ●

漸近線を求める問題です、お願いします

8. The temperature, 0°C, of a cup of tea / minutes after it was placed on a table in a room, is modelled by the equation 0 = 18 +65e s Find, according to the n. el, (a) the temperature of the cup .. 18⁰ ℃ (1) (b) the value of 1, to one decimal place, when the temperature of the cup of tea was 35 °C. 35 = 18+ 65ē 7/8 -t/8 (3) ⇒19=65€ 7/65 lu (17/4)= -4/8 (c) Explain why, according to this model, the temperature of the cup of tea could not fall to 15 °C. HA (0,94) 720 N = A + Re en it was placed on the taki (8,50) 1>0 μ= A + Be 8 04-1 Figure 2 The temperature, μ °C, of a second cup of tea t minutes after it was placed on a table in a different room, is modelled by the equation Laverage the room temp 0 -18 where A and B are constants. Figure 2 shows a sketch of u against / with two data points that lie on the curve. The line 1, also shown on Figure 2, is the asymptote to the curve. Using the equation of this model and the information given in Figure 2 (find an equation for the asymptote /. -trg t>0 is 24°C 04 142 (1) 4:10.7² DO NOT WRITER €

()に入る語句教えてください。

第1問 次の会話文について、 問いに答えなさい。 Hi, I'm Sophie. I come (1) Auckland, New Zealand. I like Japanese anime very much. (A) My favorite is One Piece. I studied Japanese a little ( ② ) my junior high school. (B) This is m y first visit to Japan. I'm excited ( ③ ) learn more ( ④ ) Japan from you all. Thank you. (1) 空所①~④に入る語句 (前置詞または不定詞のいずれか)を答えなさい｡ ①

高認の問題です。③はなぜ「〜できますか？」で「shall i〜？」なんですか？調べてもわからなかったので教えてください。

を答え (電話での会話) (平成26年11月問題2) こ A: Hello, This is Ted Brennan. Can I speak to Mr. Nelson? B: I'm sorry. He'll be out of the office until three o'clock. A: Well, [ ] B: Hold on, please. I'll get something to write with. ① do you know when he'll come back? ② will you call him back later? 3 shall I talk to him soon? ④ can I leave amessage? Hold on (電話機を切らずに)そのままお待ち下さい。 / write with (A)~で書く、(A)にはベ か万年筆か鉛筆が入る。Something to write with 何か (それで) 書くもの / call back (電話で)返 の電話をかける。 /message [ メッセージ] 伝言、 メッセージ でんごん A:もしもし､こちらはテッド・ブレナンですが。ネルソンさんいらっしゃいますか 訳 : 私はネルソンさんとお話できますか) ? B : あいにくです。 彼は3時まで会社を出ております。 A : それじゃ [] B:電話を切らないで下さい。 何か書くもの (ペンか鉛筆) を取ってきますので。 ① いつ戻ってらっしゃるかご存知ですか? ぞんじ ② ではネルソンさんに電話を下さるようにお伝えください。 ③ もうすぐ彼と話ができますか? ④ それでは(彼への)伝言 (でんごん、メッセージ)を残しておくことができますか? 正解は④、 “leave” には 「残す」 と「(町、国から) 離れる」 の二つの意味がある。 (A++h M

12はなぜ③になるのか13はなぜ②になるのか教えてください

口12. I wouldn't mind ((3)) the manager of a store. 2 to become ③ being ④ to being D to be 13.“Do still plan to go to Hawaii this winter vacation ?” レYes, and Iwish you'd consider ( 1g0 you () 3 to go )with me.” 2 going ④ to going

回答わかる方いますか?

16 次の(A), (B)の問いに答えなさい。 (A 次の英文を読んで, 文意が通じるように, 2回~16時に入れるのに最も適切な語(旬) を0~ から1つずつ選び, 番号で答えなさい。 In 2019, the Rugby World Cup was held in Japan. Rugby wasn't very popular among Japanese people until just a few years ago. In the *previous World Cup in 2015, Japan won a game against South Africa in a dramatic *upset victory. And in this World Cup, Japan reached the final eight. The Japanese national team made history and has 0 taken 5@ brought Do you know who started Japan's *bid to host the Rugby World Cup? There was a man who had a great passion for rugby. He was a * diplomat named Katsuhiko Oku, In 2003, he was suddenly attacked and killed by *terrorists in *Iraq, He was 290 engaged O prepared He started playing rugby at a public high school in Hyogo. He also showeda great talent for rugby at Waseda University. At that time, he had a dream to be a diplomat and work internationally in the future. After deep *consideration, he decided to 30O continue to However, he *encountered rugby again at Oxford University, and he tried hard to 15 develop his skills there. He became the first Japanese player of the Oxford rugby team. After that, he kept his love for rugby in his heart and *devoted himself to Japanese rugby while he worked on the 31) | 0 social Six years after his death, it was decided that the Rugby World Cup would be held in Japan. O given rugby into the hearts and minds of Japanese people. O satisfied in *reconstruction support activities for Iraq. 10 @ keep off O give up rugby then. O necessary O international stage. [注) previous (前の) terrorist(テロリスト) consideration(熟慮) upset(番狂わせ) Iraq(イラク) encounter . (……に出会う) bid (宣言 reconstf uction (復興) diplomat (外交官) devote oneself to (…に身を捧げる)