Grade

Subject

Type of questions

Mathematics Junior High

2019年度の都立の過去問です。 (1)(2)どちらも答えていただけると嬉しいです! お願いします!!

火の合問ー谷えよ。 [先生が示した問題] aを正の数,nを2以上の自然数とする。 石の図1で、四角形ABCD は, 1辺acmの正方形であり,点Pは, 四角形 ABCD の2つの対角線の交点である。 「辺a cm の正方形を,次の[きまり]に従って, 順にいくつか重ねて- できる図形の周りの長さについて考える。 [きまり] 次のの~3を全て満たすように正方形を重ねる。 の重ねる正方形の頂点の1つを,重ねられる正方形の対角線の交点に一致させる。 重ねる正方形の対角線の交点を,重ねられる正方形の頂点の1つに一致させる。 対角線の交点は,互いに一致せず, 全て1つの直線上に並ぶようにする。 右 答B 形の Todayehay nt Pesuval ot the sevenih fooS nd 。8 He star の月 (問2 2 3 ヨen THAs (a 3 ns jo spu 30 HBO bep 図3 vOL 正方形を順に重ねてできる図形の周りの長さは,図2 右の図に示す太線(一)の部分とし,点線(…)の部 分は含まないものとする。例えば右の図2は, 2 | 図4 1個目。 (F XO hol@ 個の正方形を重ねてできた図形であり、周りの長。 さは6acmとなる。右の図3は,3個の正方形を othM counくe 重ねてできた図形であり, 周りの長さは8acmとお率節ささこ の焼る なる。の美文と質問 右の図4は,正方形をn個目まで順に重ねてで に答えなさい 2個目 同 ; 3個目く デ 学 までする中 n個目 きた図形を表している。 1辺acm の正方形をn個目まで順に重ねてできた図形の周りの長さをLcmとするとき。 Lをa, nを用いて表しなさい。 い当館 S図O る 0円 (OG

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English Junior High

これの5の答えはイだったんですけどなんでそうなるのか解説をお願いします。

次の左利き(left-handed)と右利き (right-handed) についての英文を読んで, 1~5の問いに答え なさい。 =~する可能性が高い rate (s) =割合 serious injuries =重傷 (注)life span (s) 3D寿命 feel down = 落ち込む be likely to ~= data = データ allergies = アレルギー advantage = 有利な点 academic success = 学問的な成功 president (s) =大統領 Are you left-handed or right-handed? Do you use your right hand or left hand when you do some activities? In this world, some people usually use their right hand, and others use their left hand. Is there any difference between these people? Some scientists) have discovered an interesting fact, about the life span of left-handed people and right-handed people. They. say that left-handed people have a shorter life span than right-handed people. This idea comes from Da study in 1991 It showed that the population of left-handed people becomes smaller with age. The scientists said that left-handed people live in ② a world for right handed people. Some things, such as a knife, a guitar, a baseball glove, and a keyboardof personal Computers, are made for right-handed people. Left-handed people are more likely to have trouble using those things, and have-accidents and serious injuries.. In 1992, one scientist, that the life spans of left-handed people are about nine years shorter than those of right-handed people. Were left-handed people given a bad hand? If you are a left-handed person, don't feel down. In 2000, a scientist showed that ④ Coren's idea was not. true. Here is the reason: some elderly right-handed people started as left-handed people, but their parents and teachers changed them into right-handed when they were children. That means many of left-handed people died as right-handed. Like this, there are some questions about Coren's data, so we cannot say that left-handed people have a shorter life span. Also, other studies showed that the life spans of right-handed people and left-handed people are not so different. Stanley Coren, said that these make their life spans shorter. He found Still, some people say that there are some bad points in being left-handed. Because they live in a world for right-handed people, left-handed people may have higher rates of some diseases such as mental disease,and allergies. However, we can also find a lot of good points in being left-handed. They have an advantage in sports like_tennis and baseball. Also, they are likely to have more academic success and higher IQs. Five of America's last eleven presidents were left-handed people, though ( 6 11人の5人

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