なぜ、8!の分母に2!2!2!1!1!を置くと答えが出るのですか？こういった公式があるのですか？

Z-2 イウエオカキのところなのですが、私は下の写真の黄色で囲んだところの公式に当てはめたのですが、bが消えず、答えの形に合わなくて、解説をみたらf(x)=axというのを作ってて理由がわかりません。 黄色の部分がなんだったのかも教えていただきたいです🙇‍♀️ どなたかすみま... Read More

黄色い線部分の意味がわかりません。

第2問 (配点 10) Your school is arranging a work experience programme for students in Years 10 and 11. As a member of the student council, you want to present 11/ some ideas to the school to make the programme a success. You have found a report written by the school council at a school in the UK which looks helpful. Work Experience Week Last month Work Experience Week was held at our school. A11 400 students in Years 10 and 11 were asked to participate. The school provided a list of companies that were willing to accept students for a week, and students were also given the chance to contact companies by themselves. Nevertheless, some of them failed to find a place to work. Students who were not successful in finding a company had to come to school for self- study, so we should find a better way to match up students and companies next year. According to the school, 6% of Year 10 students and 34% of Year 11 students didn't participate. Why was there such a difference? The comments below clearly show the reason for this. Feedback from participants Harry, I really enjoyed the work experience. I found my company from the school's list, so it was easy to set it up. Yu-ming: This was my second time, I'm happy I did it, but most kids in my year just wanted to study for their exams. Maybe it should just be for Year 10. Clara: I couldn't get my first choice, so the workplace was a bit too far. But I think the experience helped me to try harder. Mo: I arranged my own this year. The ones on the list are fine, but several students go to the same place. I wanted to be the only student, and this time I was. Ryan: I already know what I want to be (a physical therapist) and this 2, 3 LIKE 3 To

次の問題で何故急に解の係数の関係が来るのでしょうかまず根本的に解の係数の関係はどの様なときにどの様な目的で使うのでしょうか？解説お願いします🙇‍♂️

★★★ 192αは1でない正の実数とする。 xの2次方程式x (logab)x+210ga = 0 が 相異なる2つの正の実数解をもつような点 (a, b) の動く領域を図示せよ。 _

お金に関してです fee(専門家に支払う)、charge(サービスに対する)とあるのですがあまり区別がわかりません。例えば床屋だとどちらになりますか？どなたか分かりやすく教えてくださいお願いします。

(3)①what (4)②whos (5)①that (6)③witch (7)②what なぜこの回答になるか教えていただきたいです🙏🏻‎🙇🏻‍♀️

7 誤りのある箇所を指摘して、正しく直しなさい。 (1) When he was ①asked why he was studying ②so hard, he replied ③that he was interesting in English culture. (2) With Da huge smile, Catherine ②waved her hand ③happily as she approached to me. (3) That is most dramatic ②is to see how broad and deep the support has become. (4) For a nation ②which food culture is admired ③all over the world, Japan ①depends to a surprising degree on imported food. (5) Some psychologists believe ①what a person's early childhood ②experiences affect how they behave as an adult. (6) Until the middle of the sixteenth century, the European new year began ②on March 25, the day ③when marked the beginning of spring. (7) Frankly, I can't imagine how my life would be like ③without music; it gets me through the day.

（1）でこのやり方でやったらダメな理由を教えてください

「基本 例題 178 対数の表現 ①の (1) log23=a, log35=bのとき, 10g210 と 10g 1540 を a b で表せ。 1 (2) logxa= " logx b= 3 logxc= 8 1 24 のとき, 10gabecxの値を求めよ。 [名城大] [久留米大] (3) a,b,c を1でない正の数とし, logab=a, logbc=B, logca=yとする。 このとき, aβ+By+ya= 1 1 _+ + a B 1 r が成り立つことを証明せよ。 基本 177 指針 (1)10, 15, 40 をそれぞれ分解して,2,3,5の積で表すことを考える。 log210=logz(2.5)=1+10g25 底の変換公式を利用して, 10g25をα 6で表す。 また, 101540 は, 真数 40=52 に着目して2を底とする対数で表す。 (2)10gabcx= 1 logx abc である。 logxabc の値を求める。 (3) 右辺を通分すると, 分母に aβy が現れる。 これを計算してみる。 (1)10g210=10gz (2.5)=log22+log25=1+log25 建答 ここで log25= log35 log32 =log23.10g35=ab log32= 10g23 よって log210=1+ab 前ページ検討も参照。 log240 また log 15 40= log2(5.23) log25+3 == log2 15 log2(3.5) log25=ab (前半から) log2 310g25 = ab+3 ab+3 = a+ab a(b+1) (2)10gxabc=logxa+10gx6+10gxc= 1 1 1 + + 3 8 || 24 12 よって logabc x= =2 logx abc (3) + + a 1 B 1 Y aβ+By+ya aby aβy=logablog.clogca=logab• ① loga C =1 2 log. = (3)別解 1 log■ aβ=logablog.c=log 同様に βy=log.a logab logac ra=logcb 1 1 1 したがって であるから,①から + + a B =aβ+By+ya が成り Y 立つ。 したがって, 等式は証明された。 (左辺) =logac+log.a+log =1+1/+1/ B

if I (study) harder ,I would be a college student nowのstudyがhad studiedになる理由を教えてください

5番は分の後ろから前を言っているのに、6番はそのまま言っているのですか？分かりずらくてすみません。

5. I could have had a chance to study abroad if I had studied harder. 6. If he hadn't saved enough money, he wouldn't be here in Norway now. 7. I wish I could save people around the would furm un 5. もしもっと勉強していたなら、留学に行く機会を 得ることができていたのに。 6. もし十分なお金を貯めていなかったなら、彼は今 ここノルウェーにいなかっただろう。 7. 世界中の人々を貧困から救えたら良いのに。

執権と得宗は結局なにが違うのか教えてください