学年

質問の種類

英語 中学生

この文法が分かったら全て解けるっていうのを 解説してください。

1.次の疑問文に( )内の語句を使って答えなさい。 1 Was Mr Sato swimming in the sea? (no) No, he wasn't. 2 Does Yukiko like music? (yes) Yes, she does. 3 Do you live in Osaka? (no) No, I don't. 4 Are you good friends? (yes) Yes, we are. 5 Did your aunt come to your house? (no) No, she didn't. 6 Where does Keiko play tennis? (in the park ) She plays tennis in the park. tennis が it でも OK Ne radio ( ten) How many books do you have? I have ten. 7 II have ten books. hy udying biatory 2 What time did you get up this morning? ( at 6:00 ) I got up at 6:00. /I got up at 6:00 this morning. 8 Dlep hat time? (my mother) (My mother cleans.は× ) 9 Who cleans this room? My mother does. olbng (after dinner) When does Tom study English? He studies English after dinner. English が it でも OK eE 10 (Ken's) I saw Ken's./I saw Ken's sister. 11 Whose sister did you see? (in Tokyo) It is in Tokyo. 12 Where is his house? god boy How does your sister go to school? She goes to school by bike. / She goes there by bike. (by bike) 13 Ne yor 下記参照 14 How many students are there in your class? ( thirty) I did.(washed は× ) 15 Who washed these dishes? (tomorrow) She will come here tomorrow. 16 When will Ms Tanaka come here? (Emi's aunt ) She is Emi's aunt. 17 Who is the beautiful woman? (mine) They are mine. 18 Whose pens are these? (a dog) A dog is.(in the box は不要 ) 19 What is in the box? 20 How old is your father? (forty) He is forty. / He is forty years old. 14 There are thirty. / There are thirty students./ There are thirty students in my class.(your はx )

未解決 回答数: 1
数学 高校生

青い矢印が指しているところの式変形を教えてください

40 基本 例題152 和と積の公式 (1) 積→和,和一積の公式を用いて, 次の値を求めよ。 (ア) sin75°cos 15° 0S0 (ウ) Cos 20°cos 40° cos 80 (2) AABC において, 次の等式が成り立つことを証明せよ。 C 2 sinA+sinB+sinC=4cos cos- cos (イ) sin75°+sin15° 左公の時 A B COS 2 2 指針> p.239 基本事項1, 2 重要161 Te-1+9miaー 指針>(2) AABC の問題には, A+B+C=π (内角の和は180°) の条件がかくれている。 A+B+C=πから, 最初にCを消去して考える。 そして、左辺のsinA+sinBに 和一積の公式 を適用。 ::: 0 a Lniannie CH 解答 (1)(ア) sin75°cos 15°= 2 -{sin(75°+15°)+sin(75°-15°)} 2+V3 4 公の V2 /3 1+ (sin90°+sin60°) 三 75°+15° COS 75°-15° -2sin45°cos 30°=2- (イ) sin75°+sin15°=2sin 2 2 2u(0 2 2 ie %3D(8 1 (ウ) cos 20°cos 40°cos 80°= -{cos60°+cos(一20°)}cos80°= +cos 20° )cos 80° 2 1 -cos 80°+ 1 -cos 20°cos80°= 2 1 "COs 80°+ 11 -{cos100°+cos(-60°)} 2 2 三 1 1 1 "Cos 80°+ 4 -COs 100°+ 8 -COs 80°+ 4 -cos(180°-80°) + 4 8 1 1 -COs 80°+ 8 2000 "COs 80° 三 (2) A+B+C=ェから C=π-(A+B) sinC=sin(A+B), cos=cos(-4)=sin ゆえに A+B A+B COS 2 2 A+B sin A+sinB+sinC=2sin- A-B COS 2 よって A+B +sin2· 2 2 A+B =2sin- 2 A-B A+B +cos 2 COS 2 =2cos-2cos C A B 2 2 COS 2 A B COS COS 2 C ala =4cos 2 2 練習 (1) 積→和, 和一積の公式を用いて た。 市J

未解決 回答数: 1
英語 高校生

分かる方教えてください!

What is the passage My first date with my girlfriend was a movie. I think we went to a movie called "Jackie" but to be honest, I am not entirely sure. There wasa very old and very cheap movie theater in the town that we both went to mainly about? A. Will's horrible first university in. I/ went to this movie theater with other girls sol am not sure why I stayed with my girlfriend for so long. The movie wasn't even very good. Nevertheless, we held hands in the movie and we are very happy together today. Something about that movie must have been the reason we are still together. I guess you should take your future partner to a cheap movie and you can be happy just like I am! date. B. Will's old girlfriends. - C.Will's advice based off of experience. |D.A bad movie. Wheneverl go to a restaurant in Japan, I always say, "おすすめは何ですか"./ can't read Japanese so I never mainly about? can understand what the menu says. My strategy usually works very well. I usually get the most delicious food at the restaurant and l don't have to worry about choosing what I want to eat. However, there was one time that my plan did not work. I was in a very small town which was close to Wakkanai. My girlfriend and I were very hungry and we saw a ramen restaurant where we could eat lunch. We went into the restaurant What is the passage A. Will's best food in Japan. B. Will's plan at restaurants in Japan. C.Will's love of sea snails. and l asked for the recommendation and the waitress said something in Japanese I couldn't understand. Without thinking, I said "はい". When my food arrived, I was very disappointed. I had said yes to miso ramen with sea snails in it. I love Japanese food, but I hate sea snails. My strategy did not work so well that day. D. Will's vacation to Wakkanai.

未解決 回答数: 1