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数学 高校生

数1A 集合の表し方ですが、⑵の解答解説を読んでもイマイチ理解できません。詳しく教えて下さい。

例題 145 集合の表し方(3) 20以下の自然数の集合を全体集合Uとして,次のUの部分集合 A, B, C, D の包含関係をいえ. A={n|nは3の倍数},B={n|nは6の倍数}, C={n|nは3の倍数または2の倍数}, D={n|nは3の倍数かつ2の倍数} (2) 全体集合をU={n|nは自然数, 1≦n≦6},Uの部分集合を A={a, a-3},B={2, a+2, 9-2a} とする. A∩B≠Ø, AD2 のとき,αの値を定め, A を求めよ. 方 (1) x∈P となるxが必ずxEQのとき,PCQ となり, PCQ かつ QCP のとき,P=Q となる. まずは,それぞれの集合を要素を書き並べて表す. (2) 与えられた条件に注目する. A∩B=Ø とは、 AとBの中に同じ要素があるということ. さらに, AD2 より, その要素は2ではないことがわかる. 287 89 ■解答 (1) A={3,6,9,12,15,18},B={6, 12, 18}より, BCA E={n|nは2の倍数} とすると, E={2, 4, 6,8,10, 12, 14, 16,18, 20} C=AUEDA Focus より、 D=ANE={6,12,18}=B よって, B=DCACC (2) U={1, 2, 3, 4, 5, 6} 6. (1+$)S=1+alx A={a, a-3},B={2, a+2, 9-2a} で, AUE A ●x A- ***11+ -B、 ** ・P. DANGERE 6. - 105X a-3<a<a+2, AD2 より, _A∩B={9-2a} (i)a=9-2a のときAキュ α=3 となり,このとき a-3=0 AD つまり, A={0,3} となるが, UD0 より不適. 素となる. (ii) a-3=9-2α のとき a=4 となり,A={4, 1},B={2,6,1} は、ともにの部分集合で, A∩B={1} よって,a=4,A={2,3,5,6} 歌 第4章 1 ≤ 058 150-356- 15072€ 6-8 19-206 a=a+2,0) a-3キα+2 であり、 2がAの要素でないの で, 9-2α が共通の要 集合の記号∈, C, n, U, , Ø, Uは使って覚えよう Uの要素は1から6ま での自然数 全体集合の中に入って いるか注意する。 A∩B≠Ø の確認

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英語 中学生

(2)がわかりません。答えはイなのですが、どうしてイなんですか?解説をお願いします🙇‍♀️

1 次の英文を読んで、あとの (1)~(3)の問いに答えなさい。 Did you know that a lot of people have difficulties in shopping? There are many old people who are too weak and can't walk for a long time. It's very difficult for them to go shopping every week because they can't walk or ride bikes to shops. So, their families want them to stop driving a car. If old people can't get fresh food at a shop for a long time, they will have health problems. In rural places, there aren't many shops near their homes. People can find only a few small shops that are too far away. If old people hope to buy many kinds of things they need, they have to go to bigger shops in bigger cities. But in some rural places, there aren't many trains and buses. So they don't have any means to get there for shopping alone. How about old people living in bigger cities? Cities usually have a lot of shops, but in some cities, people can't find many shops these days. This is because shopping malls are usually built in the suburbs, and the number of small shops *throughout the cities is getting (). So like in rural places, old people have to go shopping in places that are now far away from home. But for some, it's difficult. What can we do for those old people who have difficulties in shopping? Some *vendors carry a lot of products in their cars to rural places or the suburbs and sell them to people living there. If these people can go there every week, local people don't have to go shopping with difficulties. Also, shopping on the Internet is another good way to get things. But many old people have not used the Internet much, so they need other people's support. In the future, there will be more old people in Japan. *Even more people may have difficulties in shopping. So we should keep thinking about the problem. throughout [03 vendor 物を売る人 () means & the suburbs even~ さらに~ (1) 文中の@に次の3つの文を入れるとき, 最も適切な順になるよう符号を並べなさい。 7 You may think that they can go shopping by car. In Japan, the percentage of traffic accidents by old drivers has increased. But it's often dangerous for old people to drive cars. (2) 文中の()に入れるのに最も適切な語を次のア~エの中から1つ選び、 その符号を書きなさい。 7 higher smaller less I more (3) 本文の内容と合うものを次のア~オの中から2つ選び、 その符号を書きなさい。 7 If old people can't get fresh food at a shop for a long time, they will be sick. People living in rural places usually have some small shops near their houses. A lot of people in the suburbs like going shopping at shopping malls better than going shopping at small shops. I Some people carry products in their cars, and that is helpful for old people who have difficulties in shopping. The problem about shopping will be solved because old people have used the Internet a lot.

未解決 回答数: 1
英語 高校生

この黄色い付箋を貼っている文で、innocence and wrongful convictionsの部分の和訳が、無実や間違った有罪判決を理由に となっているのですが、 理由に という部分は英文でいうとどこを指しているのでしょうか?

An innocent person who has been executed can never be brought back to life. The probability of error increases with every execution. And, as illustrated by several dramatic pre-execution releases, the risk of fatal error is much greater for poor and minority defendants, the majority of whom lack Madequate legal representation. Since 1977 alone, more than 70 condemned prisoners have been released due to credible claims of innocence. And, of the 500 executions since 1997, innocence and wrongful convictions have required the release of one person for every seven executed. What of those whose 10 m いない貧しい少数民族の被告人の場合にはるかに大きなものになる。 1977年以降だ ているように、致命 が行なわれて っても、70人以上の死刑囚が信頼のおける無罪の主張をしたために釈放されて で、無実や間違った有罪判決であることを理由に釈放が要求されていたのである。 であることが発見されないままの人たちはどうなるのだろうか? 悲劇的なことで はあるが、処刑された少なくとも23人は無実であったことを示唆する有力な証拠が存 る。 そして、 1997年以降の500の死刑執行のうち、処刑された7人に対し1人の のである。 額に対処するのに安上がりな方法

解決済み 回答数: 1