学年

質問の種類

英語 高校生

教えてくださいm(*_ _)m

1F F JF F F USEFUL EXPRESSIONS 下の欄から適切な熟語を選び、 次の日本語の意味を表わすような英文を作りなさい。 1. 多くの自治体が、 廃棄物処理に費用がかさんでいることを心配している。 Many municipal governments ( ) the rising cost of waste disposal. 2. 規則的な運動は、私たちの日常生活で大変重要な役割を果たすものだ。 Regular exercise ( ) our daily life. 3. 科学者たちは、なぜそのクジラが浜辺に打ち上げられたのか、困惑している。 Scientists are puzzled ( ) why the whale had swum to the shore. 4. 大雨に加えて強風が、 その地域の家々を完全に破壊してしまった。 The strong wind, ( completely destroyed the houses in that area. ) the heavy rain 5. 雨が降り続くうちに、 川の水がうちの表玄関にまで来てしまった。 As the rain ( up to our front door. WRITING 次のそれぞれの英文の( を完成させなさい。 ) pour down, the river came as to be concerned about continue to in addition to play a role in の中の語句を並べ替え、 日本語の意味を表わすように英文 1.他の数種の鳥と違い、カツオドリは水中に垂直降下できる。 (other/unlike / birds / some), gannets can dive vertically. gannets can dive vertically. 2. 彼女は日々の心配事を全て忘れて、 3週間の休暇にハワイ旅行へと旅立った。 She took off on a 3-week holiday for Hawaii, (all/behind / worries/her / leaving) her. She took off on a 3-week holiday for Hawaii, her. 3. 台風が東京を直撃する可能性は無いように思える。 (possibility/seems/be/there / to / no) of the typhoon hitting Tokyo. of the typhoon hitting Tokyo. Part 1 Mysteries in the Animal Kingdom 13

未解決 回答数: 1
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

回答募集中 回答数: 0