接線の問題です。下線部の言っていることが全く分かりません。分かりやすく説明して欲しいです！

Check 例題 180 第3章 図形と方程式 次 例 題 99 円外の点から引いた接線2 ヴ+y=5 に点(3, 1) から接線を2本引く. そのときの2つの接点 をP, Qとするとき,直線PQの方程式を求めよ。 考え方」 (i) 離れ 考え方 接点の座標を P(x), w). Q(x2. 12) とおいて求める。 解答 接点をP(x), y), Q(x2, Va) とすると, 点Pにおける接線は これが点(3, 1) を通るから, 点Qにおいても同様にして, D, ②より。点P. Qは直線 3x+y=5 上の点である。 2点P, Qを通る直線は1本に決まるので,直線 PQ の方程式は, 円x+y°=r? 上の 点(x), )における接綱 Xx+y=5 3x+y=5 …① 3x2+ y2=5 …2 の方程式 X1x+ yy=r? YA d> 解答 3x+y=5 (別解)点R(3, 1) とする。 るの V5 P AOPR とA0QR は合同な三角 形だから,対称性より, ORIPQ これより,直線PQの傾きは -3 であるから, kを実数として, 直 線 PQは, y=ー3x+k とおける。 0 x Q (直線 OR の傾き) k ×(直線 PQの傾き)=-1 図より,k>0 原点と直線 PQの距離dは、 1- d= 13+1 V10 ここで,直線 OR と直線 PQの交点をSとすると、 AOPRのAOSP であり, OR=/10, OP=/5, OS=→R だから, 15:=/10 V10 <POR : ./ 低重心シャープペン 白·0.3mm BALANCED MECHANICAL PEN.0.3mm H 1 >21 ニ1 v G

The problem is ( being taken )care of by the mechanic now. なぜこの（）になるのか教えてください🙇‍♀️

1はDespite、2はdueであってますか？

|2 各組の文がほぼ同じ意味になるように, ( )に適切な語を入れなさい。 1)(a) Though it rained heavily, weclimbed toward the summit. (日本大) ) the heavy rain, we climbed toward the summit. (中京大) (2) (a) Our plane was delayed because of a mechanical problem. (b) Our plane was delayed ( ) to a mechanical problem. Hints! ■ (2) the Mississippi River 「ミシシッピ川」 (5) ship 「~を輸送する」 (9) sooth O 「~をなだめる, ~を落ち着かせる」 前置詞 85

この問題の解き方がわかりません。わかる方は教えていただけると幸いです🙇‍♀️💦

44滑車につるされた3物体の運動 図のように,質量mの小球A と質量3mの小球Bを軽い糸で結 び滑車Pにかける。滑車Pと質量 4mの小球Cを軽い糸で結び, 天 井からつるした滑車Qにかける。滑車はなめらかにまわりその質量 は無視できる。重力加速度の大きさをgとする。 | (1) Cを固定して A, Bを同時に静かにはなす場合,これらの加速 度の大きさ a。と, AB間, PC間の糸が引く力T, T,をそれぞれ C P 求めよ。 (2) A, B, Cすべてを同時に静かにはなす場合, A, B, Cの加速 度の大きさ a, 6, c, および AB間, PC間の糸が引く力 T, T。 をそれぞれ求めよ。 (3) Cを別の小球 Dにとりかえて (2) と同様の実験を行ったところ, D は動かなかっ た。このDの質量を求めよ。 A● B 1 3 解(1) ao=59, Ti=;mg, Tz=3mg 24 -mg (3) 3m 1 12 3 a=, b=. c= T,-号 g ) 3m 5 -9, Ts= mg, T、= 79, c= 7

基礎英文解釈の技術100 クジラの公式は理解できるのですが、この文章が理解できません。 特に語句を補っている部分が分かりません。

82 演習 82(問題→本冊:p.165) A man like Kasparov studies chess constantly and has memorized large numbers of openings, closings, and midgame situations, so that in some respects he plays mechanically. A computer can, in principle, do this with greater memory capability and thus, eventually, outmatch any human being. But this no more shows any real superiority than when it carries out vast numbers of mathematical operations simultaneously. 【全文訳】カスパロフのような人は常にチェスを研究して相当数の序盤, 終盤そして中 盤を記憶してしまっていて,その結果,場面によっては機械的にチェスをする。 理 論的にはコンピューターはそれよりも大きい記憶力で機械的にチェスをすることが できるし,それだから結局はどんな人間にも優る。しかし, だからといってコンピ ューターのほうが本当にすぐれていることにまったくならないのは, それが膨大な 数の数学の演算を同時に行う場合と同様である。 【解説】 第1文で前置詞句1like Kasparov は man を修飾している。large numbers of 「相当多くの」。 So that ~ 「その結果~」。 in some respects は, 内容から 「場面によ っては」とした。 第2文の do this は play mechanically のことである。blo arb tud stuo2 bas 第3文の〈no more than>をマークするのがポイント。次のように語句を補うと 意味がはっきりする。 h elS R this no more shows any real superiority ([when it plays chess|) 0 atitのか S Vt S Vt 「これが何ら真の優越性を示すものではないのは」 this は前文の内容を指す

34から37までの答えは4.1.3.4です。解説お願いします

Grade Pre-2 4 B Australian Success Story In the 1900s, the population of Australia started growing quickly. Many people moved there from other countries. They started families and built new homes. Because most families did their laundry by themselves, they needed places to hang い。 wet clothes at their homes. The solution was to make a long line with rope called a clothesline in every garden on which laundry could be hung to dry. 解答欄の The first clotheslines were straight, and they could not be moved. They took up a lot of space, so people could not see the plants_and flowers that they had ることが planted. Many people felt that the clotheslines did not look good in their gardens. In addition, people had to walk_up anddown the clotheslines carrying heavy, wet clothes, which was hard work. Later, smaller deyices for hanging, clothes _were. made that people could spin around. These new types of clotheslines were more convenient and took up less space in the garden. The most popular spinning clothesline is called the Hills Hoist? It was made by a car mechanic named Lancelot_Leenard Hill in 1945. Hill's design was a big success. Every family with a small garden wanted a Hills Hoist because it was easy to use. By 1994, 5 million Hills Hoists had been sold, making it the most popular clothesline in the country. The Hills Hoist became so famous in Australia that it was printed on a postage stamp in 2009. These days, more Australian families are living in apartments that do not have gardens. As a result, fewer Hills Hoists are used in modern cities. However, for many Australians, seeing such a clothesline still brings back memories of their childhood, and many people still use one in their daily lives. 0oDrich:2020 公益財団法人日本英語検定協会 宙制を禁じます

ベストアンサーの方フォローします この問題が分からないので教えてください。

1 When we need to see the time, we look at clocks or watches. Today we can check the time very 置き時計 easily. However, it was not so easy long ago. Time keeping_has a very interesting history. 簡単に 長い間,ずっと 時間の計測 Ancient people used nature to read the time. About 6,000 years ago, Egyptians used the sun. 2 They put sticks in the ground, and the shadows told them the time. These were some of the first 話す。教えるの過去形 clocks in the world. 3 At night, people could not use the sun. About 3,500 years ago, Egyptians started to measure time without it. They put water in pots. The pots had tiny holes in them. The water decreased …なしで little by little. The lines in the pots told them the time. 4 About 1,500 years ago, other people used fire. They burned candles, for example.. The candles gave them light, and people saw the time by the lines on them. 与えるの過去形 線 5 About 700 years ago, people started to make mechanical clocks. At first, they used weights to power these clocks. The clocks told the hour with bells. However, the weig were big and heavy, so these clocks were difficult to move. 6 About 500 years ago, people improved their clocks. They used springs to power the clocks. The springs were small and light. So people could move the clocks easily. Eventually, people 小さい began to carry watches. 7 Today, we have clocks and watches everywhere. This is the result of many great inventions and many people's efforts. Even now, clocks and watches are improving. 8 We cannot really see time, but ancient people tried to recognize it. They used different ideas and technologies to measure it. When we look at our clocks and watches, we can easily see the time. Now it is time to recognize the wisdom of those ancient people.

このso thatはどんな意味ですか？

Growing up as a young boy in Scotland, Alexander Graham Bell showed a unique talent for music. Though he ( 4 ) this path through to a career, Bell changed his mind and followed in his father's footsteps. His father wás a famous teacher of speech communication. Bell becanme a teacher himself, first of music, then of speech communication. At the same time, Bell pursyed his other love, inventing, by-experimenting with the mechanics of Speeth using both Triends and his dog as súbjects. In 1870, when he was 23 years old, Bel and his family sailed from Scotland to Canada to escape the tuberculosis epidemic* that had already killed Bell's two brothers. While his parents remained in Canada, Bell moved to the ている 2ん0 United States to teach. He continued to experiment with his jnterest, electricity. He dreamed of being able to transmit speech, so that people' around the world could ですた。 てる 5 )the spoken word. Bell and his assistant, Tom Watson, achieved their first success in 1875. After many アシスタント Tu 11 成ェや 1に experiments, they were able to invent the telephone. On March 7, 1876, Bell and Watson succeeded in( 6 )inseparate rooms across a small わけ hallway. Later that year, Bell made the first Iong-distance telephone call, overa distance of 16 ゴーク ilometers, to his father while on vacation in Canada. Thanks to his invention, we can nov communicate and share information with people all over the world.

日本語訳はこんな感じので合っていますか？

時計の針の回る方向はどうやって 決まったのでしょうか Why do the hands of a clock turn right? In ancient times, people made sundials. Thev 3 looked at them and knew the time of the day. If you look to the south, the sun moves acrosS the P sky from left to right. With the movement of the sun, the shadow of the rod turns right on the sundial face. Later, people invented mechanical clocks with hands. The hands of those clocks turned right, like the sundial shadow.

あってますか？？

Write school on the phone restaurant museum 上の4つの場面から1つ選んで、許可を求めた文を使った対話文を作ろう。 (OMay I~? の文を1回以上は使って、4文以上で書くこと。 の誰と誰の対話かがわかるように書くこと。 (teacher と student, clerk と customer など) A May forsot my bencl cose today. Im afraid you mar no. 1am usina iけ now. ILsk Yuno. I borron your mechanical pencil ? . A. 知識·技能 思考·判 住徒と壁徒の対話 f