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

この問題の答えがどうやってもYになってしまうので、解き方と答えを教えてください🙇‍♀️🙇‍♀️

Simplify. Write using positive exponents. (³) (y 4 ) 5 y 1 2 4 3 6 7

値域の問題について質問です。区間表記(interval notationと書いてあるところ)で、どうやったら地域が求められるかを知りたいです。 (-∞,0)U(0,5/2)U(5/2,∞)のところです。

3 Show X 2x-5 clear work. Write answer in both set and 3. Find the domain of f(x) interval notation. 100 [X+0] me bas instiqup 31 12x-5F01 & £c ! VABV3 no f(x)=2x-5 X70, ² Chalonia sex D: {x/x+0, {} f(x)= 2x-5-3x (x-5)x X70 or 2x-SFO x = { * denominator FO - ugerral) D. (-∞0,0) 0 (07²) U(²,00) EXI XEROX70 X 75 tion for the

高校数学です。分かる方教えてほしいです。

3. Paul and Polly sell lemonade in front of their house in the summer. During the month of June, they sold about 26 cups of lemonade a day at a price of $0.50 per cup. In July, they plan to increase their cups sold by 2 cups every day with some clever new advertising. They will also decrease the price per cup by 1 cent every day. Write an equation for a function L(d) that gives the amount of money Paul and Polly make selling lemonade on day d in July.

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 €

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

分かる方、教えてください🙏

LESSON 英語の型で表現する 教科書 pp.6-13. p.133 REUIEW +PRE LESSON 文の種類 |AI Choose the correct answer. E Ex (1)(How / What ) beautiful the sunset is! (2) My brother wants to ( marry / marry with ) Lucy. (3) Akemi finally told( the truth us / us the truth ). (同志社女子大) (4) There is a big dog in this house, ( isn't there / isn't this )? B Rewrite the sentences following the instructions. (1) The meeting started on time. [否定文に] (2) I went to Vietnam during the summer vacation. [下線部を尋ねる疑問文に] (3) Alice showed her friends the pictures of London. [S+V+O の形に] (4) It is a blue sky. [下線部を強める感嘆文に1 (国土舘大

5~10の分かるものだけでもいいので教えて頂きたいです。

+ W 。 Write an exponential fanction 下the form アー のち whose gaDh Da5SS throngh 人hegVP POintS- 5 ⑩2のewC26 っ+ e. (0.3) gg (2②.6 a = 89 人 ・ r (の = 所る とラグ の た ta * K フンし クス 2 2 の る 導 ァ で を^ Z (0の gg (3.6) 8. (0,-④ grg (1.15) 3 と3 生ん もゲデーサ 人 8 2 7 5 s -イ 要和へ 2 6 9. (0, 0.2) grZ (1.0.6) 10.(0,-04) grg (1.1.6) 3 . の:のの よう ムク みちた 間計の さ つみ) なのと Lンイー の|ゅ の.人て 5 プッ ン の2 を生い>林 で っっrh cnnation or ineduality- か

お願いします

命題と条件の理屈がざっくりしか分からないんです けど、 このまま暗記しても大丈夫ですか?

空集合を図で表すことはできますか？