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Mathematics Junior High

この解き方と意味が分からないので解説おねがします

ーガウスの計算方法に挑戦! この章で学んだ考え方を活用して, 身近な題材の問題を解いてみよう。 問題 ドイツのれんが職人の家に生まれた偉大な数学者カール フリードリヒ・ガウス (1777年~ | 1855年) は, 小さい頃から計算能力に優れ, 1から100までの自然数の和を、次のように計算 したといわれている。 . |から100までの自然数の和をSとすると、 QRコードからヒントの 動画が見られるよ。 S= 1 + 2+ 3+ ······ + 98+ 99+100 3+ 2+ 1 +) S=100+ 99+ 98+......+ 2S=101+101 +101+ +101+101+101 101が100個 よって, 2S=101×100 したがって, S=101×100÷2=5050 この考え方を用いて, 右のような, 1cmの正方形を 1段目に1個, 2段目に2個, 3段目に3個, n段目 にn個と並べた図形の面積を考える。 次の問いに答えなさい。 1段目 2段目 3段目 : n段目 1 n 1 HOSTE 正方形を、1段目からn段目まで並べた図形について,次の問いに答えなさい。 ① この図形の面積を,n を使った式で表しなさい。 1からnまでの自然数の和をTとして考えてみよう。 ② この図形の面積が300cmになるとき, nの値を求めなさい。 正方形を何段か並べたとき, 5段目から75段目までの図形の面積を求めなさい ...

Unresolved Answers: 1
English Senior High

回答お願いします。また、どんな話なのかも教えてほしいです🙏

13 20 速読 問題 Reading 1/52 Reading €77 Grammar /16 Writing have no choice but to~ /12 "Unless you're frank here, you'll go hungry all the time." When I was invited to an 次の英文を3分15秒で読んで, 1. の問いに答えなさい。 American woman's house for Christmas, her mother said to me, "We usually don't have a regular breakfast. Will you need breakfast tomorrow?" Out of reserve, I was not able to say "Yes, I will," because (1)that would require her to prepare breakfast for me 5 alone. I had no choice but to say, "No, thank you. (2)Her mother took me at my word, and assumed that I was also in the habit of skipping breakfast. When I was back at the university after the holidays, I (3)brought up the subject with a few Americans. 4)"If you had been in my place, and had needed breakfast, what would you have said?" One person said, "Your friend's mother was being frank, so I'd 00.00% 10 have said frankly, 'If you could prepare a little breakfast, I'm sure I'd enjoy it. (5) Otherwise, I'll eat out." Another person said, "That's not so polite. I'd have asked her politely, 'If you could prepare breakfast for me, I'd appreciate it." They asked me why I had been reluctant to give a frank opinion. I explained the Japanese cultural viewpoint. In Japan, immediately accepting an 15 offer of a meal is regarded as impudent; such an invitation is supposed to be declined at least once. But the host realizes that the guest has declined out of reserve, and makes it a rule to ask a second time. A Japanese guest never insists on being served a meal. The host understands the situation and the feelings of the guest and reacts appropriately. (7) "That idea has no chance at all of working here," one American said with total frankness. She continued, "Unless you're frank here, you'll go hungry all the time." (294 words) /11 reserve [rizá:rv] , be in the habit of ~ing 〜するのが習慣になっている 15 decline [diklain] (丁重に) 断る 19 appropriately [ǝproupriǝtli] 〜するしかない 13 reluctant [rilíktant] 気が進まない 嫌がる 精

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English Junior High

赤丸のところ、答え教えてください! 回答ないので困っています💦

3 次の対話文は,中学生の友里 (Yuri) と留学生のニック (Nick) が What kind of rice ball do you 何の種類のお茶が like the best? という調査 (survey) の結果 (result) を見ながら話しているときのものです。 これを読 んで、あとの問いに答えなさい。 好き? Yuri Hi, Nick. Do you eat rice balls? Nick: Yes, I do. I'm on the soccer team at school. After practice, I sometimes feel hungry and want something to D(e convenience store to get rice balls. foods. Yuri : What kind of rice ball do you like the best? Nick: I like tuna-mayo the best. Why do you ask me? Yuri My teacher did a survey about that in my class last week, and here are results. Forty students answered the question. 4/41/ クイズの答え Wow, forty percent of students like tuna-mayo the best. ). At those times, I often go to a Rice balls are one of my favorite Japanese Nick : Yuri: Yes, and twelve students prefer mentaiko That is the second largest number. 2人 () rice ball b the Nick: I like sake, too. It's not [as/popular as mentaiko, but two more students like it than kombu. Well, how about you, Yuri? しかし2人の生徒はこんぶより 好きだと言うえっ あなたは? Yuri: My favorite kind of rice ball is umeboshi but it's the least popular in my class. Nick I can't eat umeboshi. I don't like it because it's too sour for me. 食べたことない Yuri: Really? I like umeboshi. There is a big ume tree in the garden at my house. Nick: Yes, I know that. When I visited your house in March, I 4 (see) the tree. It 3月 had a lot of blossoms. We were looking at the blossoms from the kotatsu in your practice the least in ... ...で最も~でない put ~を入れる (過去形も同じ) feet fall 落ちる bear fruit 実をつける honey はちみつ Why don't you ~? ~しませんか。 look forward to ~ 5 10 room then. It was cold outside, but I was 5 (worm) when I put my feet into Cpl, this ユダリはあたないコタツの内にいれぞ the kotatsu. at the ume blossoms from the kotatsu was wonderful. 20 Yuri : I agree. After the blossoms fall, the ume tree at my house bears a lot of fruit every year. My grandmother makes umeboshi from the fruit. She uses a lot of honey when she makes umeboshi, so her umeboshi is not so sour. Nick That sounds interesting. Can I try your grandmother's umeboshi? Yuri: Yes. You'll like umeboshi if you eat one of my grandmother's. Why don't you 25 come to my house after school? I can make you rice balls with my grandmother. I'll make your favorite one and my favorite one. Nick Thank you. I'm looking forward to eating your rice balls. garden E blossom E into ~の中に agree 賛成する SO それほど try ~を試す 〜を楽しみにする ask ~にたずねる percent パーセント prefer ~を好む sour 酸っぱい foot (足)の複数形 15

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