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Mathematics Junior High

解き方を教えてください 四角6です。よろしくお願いいたします🙇🏻

5 2つのビーカー A,Bがあり, Aには5%の食塩水が400g,BにはAの3倍の濃度の15%の 食塩水が300g入っている。 それぞれのビーカーからxgの食塩水を同時に取り出して, A か ら取り出した分を B に, B から取り出した分を A に入れてよくかき混ぜた。この操作の結果, Bの濃度はAの濃度のちょうど2倍になった。(8点×2) (1) 操作後のAの食塩水の濃度(%) をxの式で表しなさい。 ON² 3 628) (2)xの値を求めなさい。 (AXD) VŠ$*S (1) STYORI&$(2£) .(IS-) S (1) 第章 7 6 A君の家からP地までの間に峠Q がある。 ある日,A君は家とP地の間を往復した。行きは 家から峠 Q まで登り,峠QからP地まで下り、かかった時間は102分であった。帰りはP 地 HAC から峠 Q まで登り,峠 Qから家まで下り、かかった時間は 96 分であった。行きと帰りの登り の速さは等しく, 行きと帰りの下りの速さも等しい。 登りの速さと下りの速さの比は56で ある。 ( 8点×2) [桐朋高〕 (1) 行きに家から峠Q までにかかった時間を x 分, 峠 Q から P地までにかかった時間を分とす る。 x,yの連立方程式をつくり, x,yの値を求めなさい。 =+=S(E) S (E) 第8 総合実力テスト (2) 家から峠Qを通ってP地まで行く道のりは5400mである。 家から峠Qまでの道のりは何 m ですか。

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English Junior High

問ニの②と問3、問4教えてください

3 次は,アメリカからの留学生のケイト (Kate) と, 高校生の勇太 (Yuta) との対話と, その日の夜に勇太が書いた日記の一部である。これらを読んで、後の各問に答えよ。 (One Monday morning. ) Kate Good morning, Yuta. Yuta : Good morning, Kate. You look sleepy. What's up? Kate: I went to bed late last night because I was talking a lot with my host family. Yuta Oh, I see. events. Kate: Some differences between America and Japan, for example, food, sports, and I think (find / we/ it's / to / interesting) differences in culture. Yuta: I think so, too. How about schools? Did you find any differences? Kate: Yes. For example, on the first day in Japan, I was surprised because my host brother walked to school by himself. In America, students - especially elementary school students go to school by school bus, or their parents drive them to school. Yuta: Really? In Japan, most students walk or ride a bike to school. I often get up late and ask my mother, "Drive me to school, please." But she says, "No! Run to school!" ja Kate: That's funny. I have another interesting story. Teachers here often say, "Take your textbooks home. Don't leave them at school." But students in America must leave them at school. Yuta Really? Why? Kate In America, students borrow textbooks from the states. We give them back at the end of the year. We (in/ not/them/ are/ write / must) or make them dirty. Yuta That's interesting! I want to know more about differences in culture. Kate Me, too. I want to talk about them with you. Do you have some time this weekend? Yuta I'm going to visit my grandfather's house on Sunday. But I'm ( f) on : Saturday. Please come to my house on Saturday. Kate OK. See you then. This morning I talked with Kate. She ( (1) ) me about some differences between American and Japanese schools. I was surprised that students in America [ 1. When I heard about that, I also became interested in differences in culture. So I'm going to talk about them with her on (@ ) at my house. 2

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