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Mathematics Senior High

(1)の解答にある最後の式の−1をなぜするのかが分からないです! どなたか教えて頂けますと幸いです。よろしくお願いします🙇

例題 206 三角形の個数(2) A1, A2, A3, ..., ある。この頂点のうち3点を選んで三角形を作るとき, A12 を頂点とする正十二角形が A12 A1 A2 A1 A3 A10 AA A9 A5 次の個数を求めよ. A8 A7 A6 (1)二等辺三角形 (2) 互いに合同でない三角形 分線について対称になる. 方 (1) 二等辺三角形は、 右の図のように底辺の垂直二等 A₁ A1 A12 について同様に考えれば,個数を求める つまり、頂角にくる点を固定して, 底角にくる点ま のとり方を考えればよい. 0 A10 # # AA T T ことができるが,正三角形になる場合に注意する. 3 (2) 頂点間の間隔に着目する. ① 右の図のように①と②は合同 で,①と③は合同でない. 695 01 01st 2000s 05.05 ■ (1) A」 を頂角とする二等辺三角形は, 線分A1A7 に関して対称な点の組 (A2, A12), (A3, A11), A1 (A4, A10), (A5, A9), Ag AA5 正三角形は他の から見ても二等 角形なので重 て数えてしまう blood (A6, A8) の5通り A7 頂点は12個より, 5×12=60 (個) して数えている。 このうち, 正三角形となる4個の三角形は3回重複 正三角形とな A5, Ag (A1, よって, 60-(3-1)×4=52 (個) (A2, A6, Al 2) 1つの頂点をへ

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English Senior High

英作文の添削をお願いします。🙏 写真一枚目 問 写真二枚目 回答 写真三枚目 解答例・問和訳等

名古屋大・文系 English words in length (Indicate the number of words you have written at the end of your answer. Do not count punctuation such as compras or periods as words 1 200 donors and delivers blood products to those who need them. Figure A below By year the Japanese Red Cross Society collects blood from voluntary shows how the mambers of younger (between the ages 16 and 39) and older between the ages 40 and 69) blood donors have changed in Japan from 2000 to 2019, as well as how the number of all blood donors has changed for the nineteen-year period. Figure B shows the total amount of blood donated in Linear trend lines are shown in dotted lines. Japan from 2000 to 2019 7.000.000 6.000.000 5.000.000- 4.000.000 3.000.000 2.000.000 1.000.000 Figure A Age (1639 years) A Age (40-69 years) .... ● All donors B. 1999 2001 2003 2005 2007 2000 2011 2013 2015 2017 2019 Years Amount of blood donated (liters) 2.000.000 2.000.000 1,500,000- 1.000.000- 500,000- Figure B QUESTIONS 2023 17 04 1999 2001 2003 2005 2007 2009 2011 2013 2015 2017 2019 Years Adapted from: Ministry of Health, Labour and Welfare website https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/0000063233.html Write three 1. Describe what the Figure A show. trend lines in approximately 30 to 50 words. (Indicate the number of words you have written at the end of your answer Do not count punctuation such as commas or periods as words.) 2. Describe the trend depicted in Figure B. and explain how the amount of blood donated per donor has changed since 2000 by referring to both (Indicate the Figures A and B. Write approximately 30 to 50 words. Do not number of words you have written at the end of your answer. count punctuation such as commas or periods as words.)

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English Senior High

3はこれでもおっけーですか?答えにwhenを使って書いてあったんですけど、、、 9はmadeを使ってはだめですか?

Standard 次の文を太字部分に注意して英語に直しなさい . 1. あの道を行けば町に出ますよ. That road will takes you to the town. 2. 何で戻って来たんだい? Why did you come back ? ? □□ 3. その話を聞いて私は悲しくなりました。 I became sad to hear the stor story. of his speech 6. 昨日は雨でどこへも出かけられなかった. Rainy prevented me from going anywhend The rain □□ 7. この検査で彼の血液型 *がわかった. 4. 彼は給料がよいので楽な暮らしをすることができる. His large income enables me to live in comfort. 5. それで彼の演説を思い出したよ. It reminds me That INDO □□ 10. コンピュータでやれば多くの時間と手間がかからなくてすむ. (Computers) The story made me sad Inusteno This medicine will help your 1. 無生物主語 es tenday The sudden disease made me to Cancel the thip. nudis ahirt This test showed his blood type 8. 温度計は18℃ * を指している. The thermometer says eighteen degrees Centigrade reads 9. 急病のため、僕はその旅行を取りやめにした * . ➡69 The computer will save you alot of time and thouble. us.me for gaibrooo A □□ 11. 頭痛にはこの薬が効くでしょう. headache 8 ➡10 ➡12

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