数IIの図形と方程式、図形の性質の証明です。 どなたかこの問題を解いてくれませんか？ どこがどうなっているのか分からず…

△ABCの3辺の垂直二等分線は, 1点で交わることを証明せよ。

142でどうして水素イオンだけでなくニッケルイオンが陰極で反応するのですか？

1 金、白金は陽極で溶け ず、ナトリウムは水溶液 では電極として存在でき ない。 また, 銀, 鉛は(6) 二該当する化合物がない で,いずれも不適であ 。 2.0L 142 (1) 0.43 A (2) 0.11L (3) 0.13 mol/L → Ni Ni²+ + 2e- (1) [陰極] 質量増加と気体発生の2つの反応が起こっている 2H+ + 2e Hz Ni (原子量 59) 1mol が生成するにはe2molが必要である。 また, H1molが発生するのにもe-2molが必要である。したがって,流 れた e" の物質量は, --------- 0.112 L x2 + 22.4L/mol 生成した Ni の物質量発生した H2の物質量 流れた電流を x 〔A〕 とすると, Q[C]=i[A]xt[s] より 9.65 ×10C/mol×0.020mol=x 〔A〕x (75×60)s 0.295 g 59g/mol x=0.428･A≒0.43A (2) [陽極] 2H2O → O2 + 4H+ + 4e_ e-lmolが流れると O2 - -mol が発生するから, (3) 陰極では 0.112L 22.4L/mol ×2=0.020mol 22.4L/mol×0.020mol× =0.112L≒0.11L 0.112L 22.4L/mol -×2=0.010mol の H+ が失われ, 陽極では ×4=0.020molのH+ が生じるから, 溶液中に 0.010 mol の H+ が増える。 これは 0.0050mol の H2SO』 に相当するから、 電気分解後の硫酸の濃度は, 電気分解前のH2SO 増加した H2SO4 0.020mol +0.0050mol 0.200L 溶液の体積 DS = 0.125mol/L ≒ 0.13mol/L 第2編 NiSO の電離および Niの析出により水溶液 中ではSO²が過剰に なっているので, H+ の 増加量から H2SO4 の増 加量が求まる。

至急！教えてください！

54 Complete the sentences and questions using can and the words in brackets. (you/make) a sandwich? 0 1 4 Can you (we/read) ....... books in German. 2 'Can you make a cake?' 'No, (1) 3 My little sister (not ride / a bicycle) to 10 in Chinese. 5 (they/run)....... 6 This bird (this bird/not fly)......... 7 (Sarah/not play)............ chess. 8 (you/draw)....... an elephant? ...... (He / count) ... 10 km?

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

なるべく至急で💦💦 あなたは動物園で何を見ますか？を英語にすると言う問題で、答えは「What do you see at the zoo?」だったのですが、seeをwatchにしてしまったのですが✖︎になりますか？✖︎になる場合はなぜ✖︎になるのかも教えていただけると助かります

Bの座標を(0,b)とするところまではわかるのですが、 どうしてOM²+MB²=2²+1²+2²+(b-1)²になるのかがわかりません。教えて下さい!

4 2次関数y=ax ･････ ① のグラフは点A(4, 2) を通っている。 y 軸上に点 B を ABOB (Oは原 応用 点)となるようにとる。 (1) Bのy座標を求めよ。 (2) ∠OBAの二等分線の式を求めよ。 5 y=x+4 y=-2x+5 (3) ① 上に点Cをとり, ひし形 OCAD をつくる。 Cのx座標をt とするとき, tが満たすべき2 次方程式を求めよ。 また,t の値を求めよ。 LOC +² +16+-40 =0 t=-8±2√26

教えてくださる方お願いします！！至急です！！ 長文が苦手で教えてください

26 Unit 4 長文問題 もしも時間を戻せたら? 1 Do you ever wish you ( ) able to change the past? If you 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 Mr. Woodall expected to see answers (which were connected to the own good of the students, but (3) he was wrong. The majority of the answers (5)which he received from his students were for the good of others. 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) ) hurt their friends and wanted to change that. Surprisingly, close to 40% of the students answered this way. 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 "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. 66 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. Target ①関係代名詞 ②仮定法・間接疑問文 turn back (時計を) 巻き戻す pleasantly 心地よく expected to 〜するだろうと思う good majority , t take back 取り消す apparently どうやら~らしい close to 〜近く be nice to 〜にやさしい concern for 問1 (1) ( 〜への気遣い配慮 Pag 2 junk food ジャンクフード 問3 い。 ( 問 問 (4) (6) 1

近代化によって、日本の産業や社会はどのように変化して言ったのか教えて欲しいです！課題であったんですけどよく分からなくて…よろしくお願いします！

次高校一年で課題が出ました。今日中に終わらせたいのですがわからない問題があるのでぜひ教えてください！ √245−7n が整数となるnを全て答える問題です ちなみに答えは 7.28.35の３つです 式がどうして　n=35−7k二乗　になるのかわかりません √7(35−... 続きを読む

21 √245-7n=√7 (35-n) よって, kを0以上の整数として35-n=7k と なればよい。 35-n=7k2 をnについて解くと n=35-7k2 k=0 のとき n=35-7×02=35 k=1のとき n=35-7×12=28 k=2のとき n=35-7×2²=7 んが3以上の整数のとき, nは負の数となり, 問 題に適さない。 したがって n = 7,28,35

中1 火山 答えは「海溝」と「トラフ」の2つです。調べてもよくわからなかったので、解説していただけると幸いです（ ; . ; ）

2 火山とプレートの関係についてつかもう 大陸プレート マグマ ができ る場所 火山 マグマ だまり 太平洋 海洋プレート (2) 日本列島では、多くの火山は何と ほぼ平行に分布していますか。 2つ 書きなさい。