Grade

Subject

Type of questions

English Senior High

英語リーディングの共通テスト大門3のB 4つの選択肢を並べるような問題が苦手で、対策問題集を解いている時にいつもどこかしら間違えてしまいます。時間制限を決めつつ、正しい答えを選ぶことがとても難しい状態です。 どのように考えれば良いでしょうか。 また模試などでは、時間と正確... Read More

B You enjoy outdoor sports and have found an interesting story in a mountain climbing magazine. Attempting the Three Peaks Challenge By John Highland Last September, a team of 12 of us, 10 climbers and two minibus drivers, participated in the Three Peaks Challenge, which is well known for its difficulty among climbers in Britain. The goal is to climb the highest mountain in Scotland (Ben Nevis), in England (Scafell Pike), and in Wales (Snowdon) within 24 hours, including approximately 10 hours of driving between the mountains. To prepare for this, we trained on and off for several months and planned the route carefully. Our challenge would start at the foot of Ben Nevis and finish at the foot of Snowdon. Ben Nevis (▲1344 m) Scafell Pike (▲977 m) Snowdon (▲1085 m) We began our first climb at six o'clock on a beautiful autumn morning. Thanks to our training, we reached the summit in under three hours. On the way down, however, I realised I had dropped my phone. Fortunately, I found it with the help of the team, but we lost 15 minutes. We reached our next destination, Scafell Pike, early that evening. After six hours of rest in the minibus, we started our second climb full of energy. As it got darker, though, we had to slow down. It took four-and-a-half hours to complete Scafell Pike. Again, it took longer than planned, and time was running out. However, because the traffic was light, we were right on schedule when we started our final climb. Now we felt more confident we could complete the challenge within the time limit. Unfortunately, soon after we started the final climb, it began to rain heavily and we had to slow down again. It was slippery and very difficult to see ahead. At 4.30 am, we realised that we could no longer finish in 24 hours. - 16- (2110-16)

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Mathematics Senior High

数2です。この問題があまり理解できないので解説をお願いしたいです。別解でない方です。 ・Ⓐから,点(a,b)は,・・・ この文の意味がぼんやりとしか理解できません。上の方の「指針」もどうしてそうなるのか分からないので教えて頂きたいです。 ・よって,3点(1,1),(3,4... Read More

重要 例題 83 共点と共線の関係 異なる3直線 x+y=1 ① 3x+4y=1 2, ax+by=1 ..…... が1点で交わるとき, 3点 (1,1),(3,4), (a,b) は一直線上にあることを示せ。 基本 82 指針 2直線 ① ② の交点の座標を求め、その交点が直線 ③ 上にあるための条件式を導く。 そして,2点 (1,1),(3,4) を通る直線上に点 (a,b) があることを示す。 ・・・・・・ また, のように、次の性質を利用する方法もある。 点(g) が直線ax+by+c=0)上にある ap+bg+c=0 ⇒点(a,b) が直線px+qy+c=0上にある ① ② を連立して解くと x=3、y=-2 2直線①, ② の交点の座標は (3,-2) 点 (3,-2) は直線 ③ 上にあるから 3a-26=1・・・・ A また, 2点 (1,1),(3, 4) を通る直線の (a, b) 方程式は y-1= すなわち 3x-2y=1 7 ⑩ から,点(a,b) は, 直線3x-2y=1上にある。 よって, 3点 (1,1),(3,4), (a, b) は直線3x-2y=1上にあ 4-1 3-1 つまり (3) 4 ...... 5 ...... ⑥ YA 人 3x-2y=1 11 (3,-2) p.1+g*1=1 p•3+q*4=1 patgb=1 であり p0 または q≠0 ゆえに, 方程式x+gy=1...... ⑦ を考えると, ④~⑥か 5,3点 (1,1),(3,4), (a,b は直線 ⑦ 上にある。 00000 x る。 別解 原点を通らない3直線①, ②, ③ が1点で交わるから, x=y=0のとき, ①, ②, ③ はどれも不成立。 その点をP(p,q) とすると, Pは原点にはならない。 3 直線 ① ② ③ が, 点Pを通ることから p+g=1,3p+4g=1, ap+bg=1 係数に文字を含まない ①, ② を使用する。 ◄3a-2b=1 ⇒点(α, b) は直線 3x-2y=1 上にある。 点 (p,q) が直線 x+y=1上にある ⇔p+y=1 ⇒点 (1,1) が直線 px+qy=1上にある。 p = 0 または0であるか ら⑦は直線を表す。

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English Senior High

丸のついたandについて質問です。andが結びつけているものは何かという問い対して、前後の二文全部だと思ったのですが、high~valueまででした。どういうことでしょうか?

By Theresa Cooper, Pittsburgh, PA 12 October 2019 2:14 PM Pittsburgh schools are considering switching from traditional paper textbooks to e-books within the next few years. In order to read their e-books, students will be required to buy tablets at reduced prices from the school district. This policy would affect junior and high school students over the age of 12. The head of the Pittsburgh school district, Evan Ng, said, "We're trying to stay up to date with technology. We've also had many complaints about the high cost and low resale value of textbooks over the years, and buying a single low-cost tablet will save families hundreds of dollars within 2 years." He went on to say, "Furthermore, this will help students avoid back problems that can arise from carrying heavy textbooks around in their backpacks all day." (5) Patrick Roth said, "All this technology is starting to get out of hand. Don't students already spend enough time looking at screens? This seems like it could harm their vision." One HT (Clayton Thebe parent suggested, "Even with restrictions, these tablets will be just another distraction for the kids. My kids already have trouble finishing their homework as it is." 43 Comments bnoga (1) B Newest Jeill IT

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