学年

教科

質問の種類

数学 中学生

(3)の(-9,0)の座標はどこの座標ですか?

236 ****** [8-11] 右の図のように放物線y=xと直線y=2x+8が2点A,Bで 変わっている。点Pは, y=x上をAからBまで動く。いま、図のよう に平行四辺形APBQを作る。このとき,次の各問に答え (1) 2点A,Bの座標を求めよ。 (2) 原点と点を通る直線がy=2x+8と平行になるとき, 点Qの 座標を求めよ。 MO (3) (2) のとき,平行四辺形の面積を求めよ。 また, 点 (-9, 0) を通り, その面積を2等分する直線の式を求めよ。 また [愛知] _8="(5-) X$_$="1x$$$$ 中 (8.5-767 ...….....................….…..............…........... (1)2点A,Bは放物線y=xと直線y=2x+8との交点なので、 そのx座標は方程式x=2x+8の解として求められるから,x²=2x+8 x=-2,4 (x+2)(x-4)=0 ************* x-2x-8=0 y座標はそれぞれ, (−2)²=4,42=16 MGA MAA SUMAG WENT HOS SĄJA VE よって, A(-2, 4),B(4,16) A 25 AMBAA #50053SSOM TODOMOMOA NOLA (2)平行な直線の傾きは等しいので, OP//AB のとき, 直線OPの傾きは2 よって、 直線OPの式は,y=2x 点Pのx座標は、x=2x x2-2x=0 x(x-2)=0から, x=2 y=22=4 よって, P(2,4) STHEI A(-2,4)なので, APはx軸に平行で, その長さは4である。 したがって, QBもx軸に平行で,長さが4となる。 0-2- B (4,16) だから, 点Qの座標は,Q(0, 16 ) 10-0 1-(-9)=1 よって,y=x+bとおいて, (-9, 0) を代入してbの 値を求めると, b=9 こ したがって,求める直線の式は, y=x+9 1 OMILAG 704 Nas-65MOASE 2 (3) 平行四辺形APBQの面積は, 4× (164)=48 線分ABの中点の座標は, -2 -2+4 4+16\ = (1, 10) JJCM 平行四辺形の面積は対角線の交点を通る直線で2等分 されるので,点(-9, 0) と点 (1,10) を通る直線の式 を求めればよい。 その直線の傾きは, &&TT J-R P [(-)-0) + (-A) 1 Bomb ここがポイント330- 平行四辺形の対角線はそれ ぞれの中点で交わる。 平行四辺形の面積は、 対角 線の交点を通る直線によって 2等分される。

回答募集中 回答数: 0
英語 中学生

回答を解説含め教えて頂きたいです🙇‍♀️🙏

問題10 【思考・判断・表現】 (2×9=18) 健(Ken)はクラスの友達に切手 (stamp) と地図 (map) を見せながら、ブータン王国 ( Bhutan)に住む文通相手 (pen pal)のタシ (Tashi) との交通についてスピーチをしてい ます。 次の英文を読んで、あとの (ア) ~ (ケ)の各問いに答えなさい。 0275 300q sit zow stoloporlo to roteir sdt bib 9W (1) Hi, everyone. I'm going to talk about my pen pal. Please look at this stamp. Have you ? Tashi, my pen pal ever seen a big stamp like this? It's not a Japanese stamp. Then ( 1 )? TIDS Satplopo tuodo in Bhutan, sent it to me last week. Bhutan has interesting stamps. I'll talk a little about Syobot pluqoq Bhutan. Please look at this map. Bhutan is between China and India. It's bigger than Kyushu NW (E) and has many high mountains. People in that country have clothes like Japanese kimonos, and they grow and eat rice. Tashi and I became pen pals last year. I've never seen him, ( 2 ) I've seen his father. in the Meiji pen His father came to Japan to study at college, and my mother was his Japanese teacher. t in Japan. They tre When she brought him to our house, he told me about his family. He said, "My son is as old LA 111. SIDIO Snipsd as you. He wanted to come to Japan with 3me, but he had to stay in Bhutan. He is very bih wohl (S)make interested in Japan and wants a Japanese friend. If you write a letter to him, he will be very ( 4 )." Tashi's father also told me about his country. It was very interesting. So I Sstoloporio svori ot sent a letter to Tashi, and we started writing letters to each other. We write letters in English. I didn't like writing English before, but now I enjoy it. Tashi writes English very well because teachers in Bhutan usually speak English when they teach. He sometimes uses difficult words in his letters, so I need a ( 5 ) to read them. We write about our countries, schools, families, and friends. He uses beautiful stamps to him, too. Thank you for listening.

回答募集中 回答数: 0
英語 中学生

間違ってるところないですか??

固各11点 11 日本語に合う文になるように, ( )に適切な語を入れて、 英文を完成しましょう。 このコンピュータはマイクに使われています。 This computer (って…) (ました) by Mike. になる その部屋はこの前の日曜日にそうじされました。 iS used Was cleaned loved were lapencd The room ( ) last Sunday. (3) これらの物語は多くの子どもたちに好かれています。 These stories ( ) by many children. are (4) あれらの窓は1時間前にあけられました。 create ) an hour ago. direct mov Those windows ( plcture was by Gogh. (そのはゴッボによ Todotoka. ( )に適切な語を入れて, 対話の英文を完成しましょう。 (1) A: Is baseball played by 18 players? (そ IS B: Yes, ( Wasa that shop closed at eight yesterday? it A: No Iwa snit Where! wete Hwhen was ), it( It was closed at seven yesterday. (の ) these cars made? ルはダ (3) 3) A:( B: They were made in Japan. 4) A: ( ) this story written? いう文を成 B: It was written in 1906. ]内の語を並べかえて, 英文を完成しましょう。 | 日本語に合う文になるように, [ - この本はオーストラリアで読まれています。 [ book / is / this / read ] in Australia. これらの手紙は昨夜書かれました。 This bedk is read 2ompose Theselettersiwerewriteh [ written / letters / these / were ] last night. わたしは何人かの生徒に紹介されました。 [introduced / I/was/to] some students. 3| t。 あの少女はアヤと呼ばれています。 That [ Aya / called / is / girl J. I was introduced girlis called Aya

未解決 回答数: 1
英語 中学生

今日中に教えて下さい! 宜しくお願いします🙏

皿 中学生の Takeshi が書いた次の英文を読み, あとの問いに答えよ。 Last year. we had a school festival、 Our class decided to make a big mosaic' and started to make it after school two months before the festival Atfirst Ididnt wanttodoit because I didnt like working with other people. Some of my classmates and 1 went home without working together with the other students. The atumosphere' of our class Was not good. One day, our teacher said to us, "Some of you are not working hard for the festival. Of course. 』 want you to make a Wonderful mosaic, but it iS more important to Work together." T felt sorry' to hear that The teacher continued, "ば you do this, you wil get something wonderful" From the next day, I changed my atttude*, and all my classmates began to.help each other. We talked about how to make the work* better and kept working hard for many days. Finally, we finished making the mosaic. The day before the festival we put the work on the wall of the school building*。 When we saw it we shouted for joy*. 1 was happy, and my classmates had big smiles on their faces. One of my classmates said, “We feel happy now because we worked together for the same goal" At that Hme, 1 understood what our teacher wanted to tell us 注 mosaic モザイクアート athmosphere 和囲気 feltsorry 申し訳なく思った attitude 度 work 作品 schoolbuilding 校舎 shoutedforjoy 歓声をあげた 1 次の(1) (2) の質問に対する答えを英文で書け。 (3) At first Takeshi didmt want to make the mosaic。Why ? (2) What changed Takeshis atitnde? 2 下線部の内容を30字程度の日本語で書け。

未解決 回答数: 3
1/2