拡大の中心とはどう言うことですか？！教えていただきたいです。

1 次の問いに答えなさい。固形と と辺の長さ (1) 図の五角形ABCDE は, 五角形FGCHI の拡大図である。 □ ① 拡大の中心を答えなさい。 T. AAL a

読み方をカタガナで教えてください。 例）YES イェス

Josh: Right. He never used violence, so he's still respected by people who fight for human rights. Asami: I see. I want to learn more about him. Josh: Well, he also went on fasts to protest. Asami: "Fasts"? Josh: A "fast" means eating little or no food. Asami: Wow. That sounds tough. [82 words] 10

いの答えと考え方を教えてください。

5 10 15 20 25 30 The Olympics were held in Tokyo in 1964. A few years ago before the Olympics, Japan had a big problem. It was a problem of communication. Many foreign people didn't visit Japan, and we had only, Japanese signs. For example, words like "i" or "" were on toilet doors. These signs were not understood by many foreign people. Japanese people at that time needed to make signs in many different languages for foreign people. But when they put many words on one sign, the "letters became too small. They could not easily read the sign. They had to think of ) signs for foreign people. Mr. Masaru Katsumi, a leader of a design team for the Olympics, had a great idea. everyone /to/ was easy / thought / understand he forit pictures. He wanted to make picture signs. These signs are called *pictograms and are used in many places now. Picture 1 Picture 2 Picture 3 Look at these pictures. Picture 1 shows a shower. Picture 2, shows a toilet. Picture 3 shows a restaurant. Foreign people can easily understand what each picture shows. They had to make pictograms which everyone could understand without any trouble. When they started to make them, one of the pictograms was a shower. Many Japanese people didn't know about showers at that time and didn't have one at home. One of the designers didn't even know the word "shower." One officer had to explain how to use it with a photo of a shower. The designer made the pictograms through the officer's words. With a lot of trouble and hard work, twelve designers needed three months and made pictograms for the Olympics. When the last pictogram was finished, Mr. Katsumi said to all the designers, "You did a great job, but this work is not for us. We did it for all Japanese people. Please write your names on this paper." The paper said that they'd like to give up the *copyright to the pictograms. They wrote their names on the paper. They gave up the copyright. One of the designers said, "Mr. Katsumi hopes that many people in many places will use the pictograms in the future. Money from the copyright is not important to Mr. Katsumi. He is proud that he is one of the members who worked for the Tokyo Olympics." In 2020, we are going to have the Olympics in Tokyo. Our life will change a lot. What kinds of new signs or pictograms will we see around us? (E) letter pictogram ピクトグラム(絵文字) designer www. デザイナー officer 役人 copyright 著作権

写真の問題(2)についてです 2枚目が解説なのですが、黄色で線を引いているところが分かりません なぜこのようになるのでしょうか？？

2 [1] 2つの不等式-3< < 3 ...... (1) (2)xa-・・・・・ 2 がある ただし、 は2でない定数とする。 (1) 不等式①を解け。 (2) 不等式① を満たすすべてのx が不等式 (2) を満たすようなαの値の範囲を求めよ。」

解き方がわかりません。教えていただきたいです🙇

II 右図のような直角三角形ABCがあり,∠C=90°, AB=10であり, BC = α, CA = bとする。 次の 39 の中に適切な数字を入れなさい。 (1) BC:CA=4:3のときを考える。 (i) a = 22 b: 23 である。 A 10 b 1010 B a (ii) 直角三角形ABCの内接円の半径は, 24であり、外接円の半径は, (2) 内接円の半径をrとし, BC = α, CA = 6のときを考える。 a+b-26 27 (i) rを a, b で表すと,r= となる。 28 225 ②25 C a) その番号 である。 大量 asar (5) (ii) r=1のときのα 6 を求める。 各辺の長さは正であることと,三角形の存在条件より, α 6は不等式 TB a > 0,6>0,a + b > 29 30 を満たす。 (8) A △ABCは直角三角形だから, 三平方の定理より, a2+62313233 を満たす。(e) r=1のとき, (i) より, a+b-26 27 (28) =1を満たす。 これらからα 6を求めると, a > b の場合, a= 34 +√35 36 b = 37 38 39 である。

どうしてf（x）の最大を求めるかがわかりません あとf（x）の微分がわかりません。

14. すべての正の実数xについて asaとなる正の実数αを求めよ. (筑波大) い >300< (1) 81 80

この7問の答えを教えていただきたいです。 特に②.③をお答えいただけるととってもありがたいです。 よろしくお願いいたします！！

buot ad oot Ex. 4 Change the sentences as indicated. od A do not fal sd. €981 ni vedmo!! 1 She does not dance as beautifully as you do. (= Her dancing...) ②It's the most annoying thing to have an electric power failure while watching your favorite TV program. (= Nothing...) semid gnilob)noiulovat lutong airf bonne Nagasaki has one-tenth as many people as Kolkata. (= The population of Kolkata...) In The Taj Mahal is one of the most beautiful buildings. (= Few ...) niaga bas andled 5 Some say the Taj Mahal is the most beautiful building in the world. (Use the positive 2401 ni aibol of giants a ⑥The Todaiji temple is twice the age of the Taj Mahal. (Use an adjective.) form of the adjective.) ⑦A goat is about as big as a sheep. (Use a noun instead of big.) 175

教えてほしいです

3 次の英文を読み, 空所に入れるのに最も適切なものを, それぞれ下の①~④のうちから一つずつ選びなさい。 Cigarette smoking has negative effects not only on the body of the person who smokes but also on the body of someone who regularly breathes in second-hand smoke. Some of the most obvious effects are high blood pressure, sleep disorders, heart failure, and lung cancer. Despite such harmful consequences, ( 10 ). It has been reported that smoking creates feelings of pleasure, reduces tension, and promotes close relationships. Many smokers admit that smoking is a bad habit. ( 11 ), they tend to think that the number of cigarettes that they smoke is below the danger level and thus are not worried about the risk. Some even feel that they do not breathe in the smoke and that a cure for cancer will be found before they become ill with the disease. We have to admit that smoking is a habit which is difficult to break ( 12 ) the nicotine found in tobacco goes into the blood and stimulates the brain, making smokers feel pleasant for several minutes. What is more, the smoker usually feels anxious and wants to have another cigarette. ( 13 ) the policies that now ban smoking in most public areas, the stress that people often experience at work and at home can force them to smoke. ( 10 ) ①some people decide to stop smoking millions of people continue to smoke ( 11 ) the price of cigarettes has risen ①smoking is more harmful than drinking Therefore 2 While ③ Of course 4 However (12) 1 because 2 as a result 3 but SO (13) ①Despite 2 Although (3) But 4 Yet

解説の最後の1文どういうことですか🙇‍♂️

[1]正三角形ABCにおいて,A,B=7, Asco =すとおく。A,Bo BL CA を2:1に内分する点をそれぞれ A, B, C, とする。 さらに△ABCに ついて, 辺 A, B, B, C,, C,A, を 2:1 に内分する点をそれぞれ A2, B2, Cぇと する。この操作を回繰り返したときに得られる点を Am Bm Cm とするとき 次の問いに答えよ。 (1)ABI をとで表し,内積 A B A B • の値を求めよ。 (2) 自然数に対して、 Anti Bani=-13A-1B-1 が成立することを示せ。 (3) AsAznpanで表せ。 Ak-1 AR-15 ( Ck Ak/ Ck-1 BR-1 Bk

(2)答えは2√3です。考え方を教えてください。

3 右の図で、曲線あは関数 y=x2のグラフ, 曲線は関数 ①あの y = = -122 のグラフです。点Aは曲線◎上の点で,その座 標は(-2,-1)です。 このとき、次の各問に答えなさい。 (11点) S B EX E (1) 関数y=x2 について,xの変域が-3≦x≦1のとき の変域を求めなさい。(5点) ASA SUSTA H O D