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English Senior High

英検準1級のライティングが毎回悪いです。 1回目 内容 3/4 、構成 1/4 、語い 3/4 、文法2/4 2回目 内容 1/4、構成1/4、語い3/4、文法3/4 こんな感じで毎回ライティングの点数が1番低いです。 2回で共通しているのは、構成が... Read More

Will Societies fature? with low birthrites face. Prents: Workforce, Foodshortige, Technological Innovation, Environment problem. I disagree with the idea. I have two reasons to my opinion. to get on important to First of all, it doesn't cause a foodshortage If the number of people increased, Some people who Live ChrA Parthe popularity decreased, it with bat country can't get the food enough. if food. That is Cause food problem. a Crisis in the not cause Płoblem Second of all,. it doesn't cause an environmental problem. These days, many trash is in ocean and on the ground. This kind of problem is Caused by the people decreased, the number of trash will inclined. foo Support In conducian, I think that low birth raten twon't food shortage and an enviroment a Is marraige becoming less important today than it was in the past ?! I agree with the idea. I have two reasons to support my opinion... university. ability of their studying, their much First of all, having children cost much money. It goes saying Therefore, to support their that these days many students parents must pay money. Secord of all, some women wants to live alone. (Vowadays, the number of women is who is working increasing. As a result, they can have enough money to live by themself so they don't think it is necessary to marry. increasing is is becoming less important. In conclusion, I think that their money problem and the number of people who want to be independent the problem that the marraige is

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Mathematics Senior High

写真の問題の(2)の赤線部についてですが、なぜ追試を受けた人はx1の一人だけなのですか? 例えばx1,x2が同じ点数だった場合、最低点に当たるのはx1とx2の二人になりますよね?でも問題文では最低点が一人とは書かれていないです。 解説おねがいします

10人の生徒が10点満点のテストを受けた。 得点の低い順に並べたデータを 1, 2, ..., 10 とする。 最低点の生徒は合格点に達しなかったので, 翌日追試を受けて 2 合格点をとった. 追試前の平均,分散をそれぞれx, sz', 追試後 の平均,分散をそれぞれ, y, s,” とするとき,次の問いに答えよ。 (1) との大小を判断せよ.すべて正確を (2) I = 7. S2=3.4 とする. ( 追試を受けた生徒の得点が3点から5点になったとき OGT) sy2 の値を求めよ. grupa (2) 追試を受けた生徒の得点が' のとき, x1'=x1+2 …. y=''…..+I10= _x+x2+..+ x 10 +2 10 10 (11²2² + x² ² + ... + x²₁60²) - ( 7 ) ² √ 138 == 17/0 (1₁²³² + x ₂ ² - 2 Sy • 1 0 ( ( x ₁ + 2 ) ² + x ₂²³ + ... + x ₁0²) — (7)² 10 = 1 / 0 (x²₁² + x ₂²³ + ··· + x₂0² + 4x²₁+4)−(y)² ... = -1/10 ( x ₁ ² + x ₂ ² + + + x₂0²³) - (+)² + (x)² − (7)² + ²(x1+1) 5 2 =S₂²+ (x+y)(x−y)+² (3+1) 14 ==x+0.2=7.2 = sz2-14.2×0.2 +1.6 = sz2-2.84+1.6=3.4-1.24=2.16 235

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