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Civil service examination Undergraduate over 3 yearsago

面積 S. △ABC=△ABD+△ACDの解答ではだめなのですか？答えは5です

AB=6、AC=3、∠A=120°の△ABCにおいて、 ∠Aの2等分線が辺BCと交わる点をDとするとき、線分ADの長さの値として、最も妥当なのはどれか。 1 21 4 3 3|2 5 2 2 3 20/00 5 3

Unresolved Answers: 1

Mathematics Senior High over 3 yearsago

問１, 赤球6個と白球5個の11個の球が入っている袋から、同時に３個の球を取り出すとき、3個とも白球である確率を求めよ。問２, 赤球4個と白球３個の合計７個の球が入っている袋から、同時に２個の球を取り出すとき、取り出した球にふくまれる　　　　　赤球の個数の期待... Read More

Unresolved Answers: 1

Mathematics Undergraduate over 3 yearsago

この証明は高校数学の範囲でできますか？数1 数と式。 ①有理数は整数,有限小数,循環小数のいずれかになる。②逆に整数,有限小数,循環小数は分数で表すことができ有理数である。 ①の証明って教科書の文章で証明になりますか？ ②の証明って高校数学の範囲内でできますか？いきなり逆... Read More

一般に,正の整数a,bに対して, 分数 10 が整数でないとき, 22ページの図のように, a を6で割った値を求めるために割り算を続けると, 1回の割り算ごとに, 余りは0, 1, 2, ･･･, 6-1 のいずれかになる。余りに 0が出てきた場合, 分数は有限小数である。余りに0が出てこない場合, 数号に 6回割り算をする間にどこかで同じ余りが現れる。よって, それ以降は同じ計算が繰り返されるから, 循環することが分かる。このように, 有理数は整数, 有限小数, 循環小数のいずれかになる。逆に有限小数, 循環小数は分数で表すことができ, 有理数である。

Unresolved Answers: 1

English Junior High over 3 yearsago

すべてわかりません…教えてください！

Unit 4 長文問題もしも時間を戻せたら? 1 ) able to change the past? If you Do you ever wish you (1) had (2) that ability, maybe you would spend more time practicing soccer, learn the instrument that you always wanted to play, study harder for that big test, or try to save more money for the future. 2 What would you do if you had the ability to turn back the clock? This was a question which Mr. Woodall, a high school teacher in Philadelphia, asked his students. Mr. Woodall wanted to know what was important to his students but was pleasantly surprised to see the results. I think their answers will be very interesting to you, too. (3) 3 Mr. Woodall expected to see answers (which were connected to the own good of the students, but he was wrong. The majority of the answers (5)which he received from his students were for the good of others. 4 Targ ①関係 2157 (4) A very common answer he found was, “If I could turn back the clock, I would take back some things that I said to a friend." Apparently, many of the students regretted saying something (5) friends and wanted to change that. Surprisingly, close to 40% of the students answered this way. ) hurt their 5 Another common answer was about pets. "If I were able to turn back the clock, I would spend more time with my dog," or "(7)I would be nicer to my cat," were some common answers. Almost 25% of the students missed their pet very much and wanted to show more love. These pets included dogs, cats, birds, rabbits and other animals. 6 There were other answers about reading more books, studying harder, or eating less junk food. However, Mr. Woodall was quite impressed with his students and their concern for others. He decided to share all of the answers with his students, and the students enjoyed hearing the different answers. Mr. Woodall decided to try this activity with his students every year. By asking, he felt he would learn a lot about his students. tu P e g n t