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数学 高校生

色がついてるところでどうやって式を変形したのか教えて欲しいです🙇‍♀️

File/d/12mvlw0u0gkTn17gOn-woNVLFWD59Z15E/view x+y-zx+y-3=0 すなわち (1)+(y+1/22(2) よって、求める円の中心は点 (1, -1/2) 半径は12/2 ある。 (p.106) 深める 方程式 ③は,円x²+y2-50 (中心が原点, 半径が V50円)を表すことができない。 円と直線が異なる2点で交わるための必要十分条件は D0 であるから m²-15>0 52 この不等式を解いて m<-√15,√15<m 円と直線が接するための必要十分条件はD=0 である から m²-15-0 この方程式を解いて m= ± √15 m=√15 のとき, 2次方程式 ③ の解は 4m x= 4./15 (√15)²+1 このときy=√15.15-3 5. √15-3-2/ 3= x= ✓15 m=-√15のとき, 2次方程式 ③の解は 4m 4.(-√15) m² +1 (-√15)²+1 √15 1110 問題10 連立方程式 ② を①に代入して整理すると (m²+1)x²-8mx + 15 = 0 ③ この2次方程式の判別式をDとすると =16m²-(m²+1)-15 m²-15 VTTWTY TE (x² + y²-2y=0 ...... ① ly=mx-3 ①③から 12 x1=1= すなわち これは点 (a,b), 点 (c, d) が直線x+2y=5上にあ ることを示している。 したがって 求める直線の方程式は x+2y=5 問題12 接点の座標を(x1+ y1) とすると x₁²+y₁²=9 接線の方程式は ① xx+yiy=9 **** (2) (1) ② が直線 4x+3y = 1 に平行であるための必要十分 条件は 4y1-3x1=0..... ③ 9 12 または x₁== 5 よって, 求める接線の方程式は,②から 1/23x+2/23y=9 または 12 9 5 4x+3y=15, 4x+3y = -15 ****** において, U Y1 = :9 95

解決済み 回答数: 1
英語 高校生

英検一級のライティングの添削をお願いしたいです。 Should the Japanese government encourage more immigration? というトピックで書きました。よろしくお願いします。

The Japanese government should encourage more immigration Problems such as lack of diversity, Japanese companies retreating from the world declining birth rate 39 there is a because market, and aging population with a can be solved by increasing immigration. Japan, although it is one of the advanced countries, lack of diversity. Except of big cities like Tokyo, there are only few foreigners. I think this is a set back to Japan while other countries are stepping foward by changing its own system, Japan is refusing to make a change to its old style, and I believe this is because Japan doesn't have abundant. perspectives. foreign countries to. By encouraging more immigration, they can provide many different views and stimulate Jahanese people. as of what does other countries. a image Japanese companies are retreating from the world market. Many Companies in Japan are producing overeng ineered expensive products that only targets Japanese customers and it is losing its power in other countries : If Japan accepts more immigrants Japanese companies. will be able to get detailed regire to their product and stay in the world market. Aging population and a declining birth rate is a huge problem in Japan right now. Because of it, companies are losing workers and young people will have to saffer with a lot of taxes in the future. Encouraging immigration can increase population and solve. these problems more By encouraging more immigrations, many problems that Japan is facing can be solved.

解決済み 回答数: 1
英語 高校生

一枚目 長文 二枚目 問題(ア) 三枚目 自分の答えand模範解答 付属の解説本が意味不明でした。解説お願いしたいです。

10 Life Reading 目標 20分 速読問題 次の英文を2.5分で読んで, 1. の問いに答えなさい。 Would you like to try to read a book that is 140 pages long every day! Many - are Japanese are surprised (2) to learn how long some American newspapers are. They a Slæom orll aneqsgewen to ancieev listipib ert asli orl not always 140 pages long, but they are usually at least 50 pages long. On Sundays 70198 ni olqooq odT C to 21697 0 1 qoq T some big city newspapers have hundreds of pages and *weigh almost a kilogram. gnibro biqs news, too. 37 There are lots of sections 5 (3) Of course, not everything in such a newspaper is news. m2 T raqaq zabavě s esi vis (1974-monib) 19m 16918 i 1996 about books, movies, travel, computers and hobbies, as well as star interviews and es, as well s boy arroqe bas zadintend comics in color. There are also many *advertisements, of course, but a lot of people ano ang m CECING OF COU vsbru² no,199sq ylisb niebimos atidhe bias Hold com bris flood, 25ñola bas find the advertisements very entertaining. Of course, the newspapers have a lot of he) {lind sdt ni snovievs ch the news Moky) zpililoq You may be surprised to find that (4)such large newspapers are (5)very cheap. They gaidyar are much cheaper than a newspaper in Japan. A large, heavy Sunday *edition of a vbodyas J Sunday edition of a Japanese newspaper. ding/ 4 weigh [wéi] : 重さが・・・である 11 edition [idífan] : (新聞の)… 版 1. smi ca ad te bear a newspaper in a big city may only cost about 350 yen, but it is 20 times bigger than the JR noilo92 smse sdt best a siqot amae ad juos at ziqot installib yasm tuds et 7 advertisement [ædvərtáizmənt]: 2 @ (171 words)

解決済み 回答数: 2
英語 高校生

一枚目 長文  二枚目 選択肢 三枚目 自分の答えand模範解答 解説お願いします。

10 Life 目標 20分 Reading 速読問題 次の英文を2.5分で読んで, 1. の問いに答えなさい。 Would you like to try to read a book that is 140 pages long every day? Many Chod of gi amor gnivel 91018 Japanese are surprised (2)to learn how long some American newspapers are. They are Strom erll aneqaqawen to anoienev Istigibrarü alilorlW not always 140 pages long, but they are usually at least 50 pages long. On Sundays, 208 miss ni olq to a los d some big city newspapers have hundreds of pages and *weigh almost a kilogram. gnibro biq 5 (3) Of course, not everything in such a newspaper is news. al nogeq vebau2 s dva no news, too. about books, movies, travel, computers and hobbies, as well as star interviews and kl zweiver sivom bruslood 2911212919i nemud" brit a day toge bns eesnied . F comics in color.euThere are also many *advertisements, of course, but a lot of people ni immortwebas dold bris,noisse blow a e'eredi ysbru² no 199sq ylisb find the advertisements very entertaining. Of course, the newspapers have a lot of rimantledi ni mot There are lots of sections 12 sdt : [xbiszid] anbied we ca de terroiri nemar You may be surprised to find that (4)such large newspapers are (5)very cheap. They Sunday edition of a Japanese newspaper. news gnidrens S vbodzub are much cheaper than a newspaper in Japan. A large, heavy Sunday *edition of a gnition 4 weigh [wéi] : 重さが・・・である 11 edition [idifan] : (新聞の) ・・・版 1. こ 7 advertisement [ædvərtáizmənt]: but it is 20 times bigger than the newspaper in a big city may only cost about 350 yen, but it is zamit Jn979llib Jis moitos sme si bes ne E DAS C plot me juos ziqot installib yasm Juods xls) 62 . a b 2. (171 words) (

解決済み 回答数: 1
英語 高校生

一枚目 長文 二枚目 問題 三枚目 答え Q:なぜこの答えになるのかとその理由まで教えていただきたいです。 よろしくお願い致します‼︎

INDUSTRY, INNOVATION AND INFRASTRUCTURE Reading 速読問題 次の英文を2.5分で読んで, 1. の問いに答えなさい。 Smartphones, tablets, and laptops are getting *thinner and lighter than ever before. However, in the future, you might not need to carry any gadgets around with you. If designers have their way, you may just need to wear a pair of "virtual goggles" instead. (2)Scientists are testing "prototypes at the moment, (3 though it may be some 5 time before they're actually on store shelves, These goggles will act like a computer screen and display information and gnibso biqef entertainment from the Internet. So, (5 when you are sightseeing, you'll be able to see 目標 20分 information about a famous building in front of you. Or you'll be able to get a *review vud of vere eis istil zanorghome to a of the restaurant menu you're looking at. The goggles will have GPS, so you'll be able nglasbah bus siquie 10 to *stream directions to a party or *locate a nearby coffee shop. They will also have a Writing bium phlyn Jeol/ have that built in, too. alidoM A camera to take photos, and you won't need a cell phone anymore. The goggles will 000.887 0 19 CAN DO (mm 7 juoda) bhow art al zomidd ¹thin [Oín] 4 prototype [próutoutàip]: , 10 stream [strí:m]:・・・を同時再生する 10 locate [lóukeit] : ... を突き止める, 探し出す yud uoy bluow lebam ribirlw.enoriqhome queria s to Isbom Jesisleri yud of raw way 1a-8 @ 2 gadget [gædzit] : *, ** 3 have one's way : 思い通りにする 8 review [rivjú:]: , olidol (159 words) (-) TAT 11-80 ya way to our worl, ritnom airt 14-8 yud boy t 000,08% 000,89% 000,TS / 1. この英文のター a. Future S b. Gadgets c. Prototy d. Virtual 読問題もう 2. 下線部(1) は! 3. 文法 下線 chなるように uh Scientists 4. 下線部(3)の toya. もっと c. ...にも 5. 下線部 (4) 1. for = 6. 下線部 (5) ますか。 7. 全体把握 (7) Sma befo (1) "Vi (3) "Vi (1) "Vi (*) If

解決済み 回答数: 1
英語 高校生

you will gain an opportunity とはならないですか?

発展途上国でしばらく暮らしてみることは、日本を違っ た角度から見直すよい機会になる。 bisih beomaded ✓ 主語は ? この文の内容は日本人以外には成立しません。 よって、この文を 一般論と考えてyou を選択します。 ただ、より厳密に言えば、 客観的事実ととらえ、いわば日本人論の一節と考えるなら Japanese people が主語となります。 もし日本人の若者に対して誰かが語っていると考えるならば you を主語とするのが自然でしょう。さらにその場合は、 「~する 人は」 と考え Those who ~ や Anyone who を主語に置くこと もできます。結局、「誰が誰に伝えるか」を意識しないで文を書 くことは、不可能なだけでなく意味がないということなのです。 If you live in a developing country for a an opportunity to look at Japan while, you gain from a different point of view. には look at things from a different point of view from another point of view] とすればいいわけです。 point of view は、viewpoint や perspective で置き換え可能です。 「~する機会になる」は? gain / have an opportunity to (V) V の機会を得る / 持つ」 がもっとも一般的な表現です。冠詞が a ではなくて an であるこ と、opportunity は port 「港」を語源に持つ単語ですから oppotunity は間違いであることに注意してください。 なお an opportunity を a chance にすると口語的な表現になります。

解決済み 回答数: 1
英語 高校生

すみません、合っているか確かめてもらえませんか?

Let's try a test! ④ 76 英語は私たちの共通言語だ。 77 ある特定の年齢のグループ 78 地価の上昇 79 我が国の人口は減少しつつある。 80 生ごみの量を減らす 81 その学生を2つのグループに分ける。 82 少子化 83 若者がその集団の70%を占める。 84 高野山は世界遺産に登録されている。 85 21世紀に 86 発電 187 私たちが乗ったバスが2時間遅れた。 188 その雑誌の最新号 89 前日の朝 90 異なる視点から 91 シングルルームを2泊予約する 92 デザートは別腹だ 3 室内スポーツ施設 4 私たちの新居は建設中です。 5 身長順に並ぶ 反対の方向に歩く 長距離を歩く ロシアの経済状況 調子が良い 英語を話す機会がある English is a ( common a ( certain ) age group an ( ) in land prices Our country's population is (declining (Reduce ) the amount of garbage (Divide ) the students into two groups the declining birth ( Young people of the group. Koyasan is ( Heritage Site.. in the 21st ( soaring rate ) language for us. account registered as a World cen tury ) for 70% room room ) ) of electricity the ( power Our bus was (delayed. the ( latest the ( befor from a different point of ( book a single ( have ( indoor sports ( facility Our new house is under( construction). line up in order of ( walk in the opposite ( walk a long ( the economic ( be in good (condition ) have an (opportunity) to speak Englist ) two hours. ) issue of the magazine ) morning view ) for two nights ) for dessert height direction ) distancel) situation ) in Russia

解決済み 回答数: 1