Zの求め方を教えてください🙇‍♀️

(3) 次の図で、直線か,g,r,sは平行のとき, (4) x,y,zの値を求めなさい。 Þ x cm q r 20 cm y cm S Q=150 9 cm 12cm 10cm 16cm 9 cm z cm D 5:4219 5y=36点 y=7.2 F点 20116 -7.2 cm 15:4=2125) sl 12=8cm a=60 1693 15% の 5:4:10:2 D 52=40 2=8ヶ

少し分かりにくいですが、解説（2枚目の写真）の下線部の4つが、そうなる理由が分かりません。そこを特に詳しく教えてください。

右の図1に示した立体OABCD は, 正四角すいであ る。 右の図2は,正四角すい - ABCD の展開図であり, 4点P, Q, R, S は, この展開図を組み立てたとき,図1 の頂点Oに重なる点である。 また, 4点P, Q, R, S を結んでできる四角形 PQRS は, 正方形である。 点A直線PQの距離が2cm で, 正方形 PQRS の 1辺の長さが8cm のとき,次の各問に答えよ。 5 [士] 次の 「の中の「き」 「く」に当てはまる数字を それぞれ答えよ。 正四角すい - ABCD の表面積は, きく cm²である。 [2] 次の ** 正四角すい - ABCD の体積は, 図 1 図2 P A A B の中の 「け」 「こ」 「さ」に当てはまる数字をそれぞれ答えよ。 こ cm3である。 R

あ　に入るのは、until か withoutのどちらですか？ 解説もありでお願いします！

Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: I was woken up by the earthquake this morning, and couldn't go back to sleep after that. Nothing fell on the floor or was damaged, but definitely it was a big one! I was scared! Yeah, it woke me up, too. I haven't felt one like that in a while, but I think I was too used to those shakings. I went to sleep right after. Weren't you scared, Risa? Yes, but just a little. I think I'm afraid of a really big one, like the one in Tohoku in 2011, anyway. You know, you can't be just scared ( ) preparing for disasters, Jane. Do you know what to do in an earthquake? There are almost no earthquakes in your country, right? No, I haven't experienced one in the U.K. Can you tell me what to do? Sure. The first priority is your safety. Hide under a desk or table to protect your head. Stay there until the earthquake stops. Then be prepared to move to a safer place. I'm sure we'll do some simulations in the evacuation drill held at school next Monday. We'll learn there what's important to do during an earthquake. Wow! That sounds great. I'm looking ( 1) the drill now. Maybe we can get "Moriyama-ku Evacuation Map" after the drill. It shows you (in, where, should, you, a disaster, go ). Jane: Risa: Oh, I'm glad to know that. You should make an emergency kit, too. Our family has made one each and put them near their bed. I see. Can you tell me how I should make it? Well, I'll send you an email later then. Jane: * I'm getting less scared, Risa. Thank you very much. Risa: You know, Jane, "Don't be scared; be prepared."! woken wakeの過去分詞 definitely 確かに in a while しばらく be used to ･･････に慣れている right after その後すぐに priority safety hide En

あ　に入るのは、until か withoutのどちらですか？ 解説もありでお願いします！

Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: I was woken up by the earthquake this morning, and couldn't go back to sleep after that. Nothing fell on the floor or was damaged, but definitely it was a big one! I was scared! Yeah, it woke me up, too. I haven't felt one like that in a while, but I think I was too used to those shakings. I went to sleep right after. Weren't you scared, Risa? Yes, but just a little. I think I'm afraid of a really big one, like the one in Tohoku in 2011, anyway. You know, you can't be just scared ( ) preparing for disasters, Jane. Do you know what to do in an earthquake? There are almost no earthquakes in your country, right? No, I haven't experienced one in the U.K. Can you tell me what to do? Sure. The first priority is your safety. Hide under a desk or table to protect your head. Stay there until the earthquake stops. Then be prepared to move to a safer place. I'm sure we'll do some simulations in the evacuation drill held at school next Monday. We'll learn there what's important to do during an earthquake. Wow! That sounds great. I'm looking ( 1) the drill now. Maybe we can get "Moriyama-ku Evacuation Map" after the drill. It shows you (in, where, should, you, a disaster, go ). Jane: Risa: Oh, I'm glad to know that. You should make an emergency kit, too. Our family has made one each and put them near their bed. I see. Can you tell me how I should make it? Well, I'll send you an email later then. Jane: * I'm getting less scared, Risa. Thank you very much. Risa: You know, Jane, "Don't be scared; be prepared."! woken wakeの過去分詞 definitely 確かに in a while しばらく be used to ･･････に慣れている right after その後すぐに priority safety hide En

あ　に入るのは、until か withoutのどちらですか？ 解説もありでお願いします！

Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: I was woken up by the earthquake this morning, and couldn't go back to sleep after that. Nothing fell on the floor or was damaged, but definitely it was a big one! I was scared! Yeah, it woke me up, too. I haven't felt one like that in a while, but I think I was too used to those shakings. I went to sleep right after. Weren't you scared, Risa? Yes, but just a little. I think I'm afraid of a really big one, like the one in Tohoku in 2011, anyway. You know, you can't be just scared ( ) preparing for disasters, Jane. Do you know what to do in an earthquake? There are almost no earthquakes in your country, right? No, I haven't experienced one in the U.K. Can you tell me what to do? Sure. The first priority is your safety. Hide under a desk or table to protect your head. Stay there until the earthquake stops. Then be prepared to move to a safer place. I'm sure we'll do some simulations in the evacuation drill held at school next Monday. We'll learn there what's important to do during an earthquake. Wow! That sounds great. I'm looking ( ) the drill now. Maybe we can get "Moriyama-ku Evacuation Map" after the drill. It shows you (in, where, should, you, a disaster, go). い Oh, I'm glad to know that. You should make an emergency kit, too. Our family has made one each and put them near their bed. I see. Can you tell me how I should make it? Well, I'll send you an email later then. z I'm getting less scared, Risa. Thank you very much. You know, Jane, " Don't be scared; be prepared."! woken wake の過去分詞 right after その後すぐに definitely 確かに in a while しばらく be used to ･････に慣れている priority safety hiden332

どうしたら−1になるのかがわかりません💦 教えていただきたいです🙇‍♀️

n(n+2)=n+30 n² + 2n - n -30=0 n²+ n 30:0 n= (3) 2次方程式 3x2+4x-1=0 の2解のうち、 小さい方をaとする。7011/23 aよりも大きい最小の整数を求めなさい。 -2-√9.

規則性がよくわかりません。答えの1番下の81－6＋1はどう言うことなのかおしえてください。

重要 8 右の図のように、ある規則にしたがって, 連続 する自然数を, Iから順に100 まで並べるもの とする。 上から3段目で左から2列目の数 は6である。 上から6段目で左から9列目の数 を求めなさい。 〔徳島〕 1234 列列列列 目目目目 ... 1段目 14916 2段目 2 38 15 3段目 5 6 714 4段目 1011 1213

英検対策の問題です。中１なのですか分からないとこばっかりで…。解説も出来れば、出来ればでいいのでお願いします🙇‍♀️⤵️

次のEメールの内容に関して (28) から (30) までの質問に対する答えとして最 582 SA 4[B] [も適切なものを 1,2,3,4の中から一つ選び、その番号のマークをぬりつぶしな さい。 From: Lynn Mills To: Cathy Leonard Date: June 28, 2011 18:39 Subject: Changing the schedule Dear Cathy, How are you? I just checked my schedule for next month. There is a problem. I asked you to babysit* Luke and Kevin on July 16th, but my meeting is on Saturday, July 23rd. Can you come that day instead? The time is the same. I'll leave the house at ten in the morning and be home by four. I also wanted to ask you about lunch. Could you make lunch for the boys again? They really loved the spaghetti you made for them last time. If you don't have time to cook, I can leave some sandwiches for you and the boys. If there's something you need for lunch, I'll go shopping for it on Friday. Please e-mail me soon about the new date. I hope it's OK for you. You're Luke and Kevin's favorite babysitter. Thanks, Lynn Mills From: Cathy Leonard To: Lynn Mills Date: June 28, 2011 20:12 Subject: No problem Dear Mrs. Mills, Thank you for your e-mail. I don't have any plans on the 23rd, so I can change the date for babysitting. My grandparents will visit us on the weekend of the 16th. I'm glad because now I'll have more time to spend with them. About lunch, I would like to make pizza and salad this time. I hope Luke and Kevin can help me with the cooking. I think it'll be fun. I'm looking forward to playing with the boys again. Say hello to them! Nee you next month, Cathy Babysit: 子守りをする (28) What will Mrs. Mills do on July 23rd? 1 Go to a meeting. 2 Go shopping. 3 Take a trip. 4 Have a cooking lesson. (29) Why is Cathy glad? 1 She will be able to work on both weekends. 2 She will have more time to see her grandparents. 3 She won't need to wake up early. 4 She won't have to make lunch. (30) What does Cathy say about lunch? 1 She wants Mrs. Mills to leave some money. 2 She will make Luke and Kevin's favorite food. 3 She thinks it will be fun to cook with Luke and Kevin. 4 She wants to take Mrs. Mills to a restaurant. 21年度第1回

夕方までに⑤、⑥の説明を教えてください🙇‍♀️🙏

らうすい水酸化ナトリウム水溶液にBTB溶液を加えると､水溶液の色 がて水溶液の色が緑色になった。 水溶液の色が緑色に変化した理由を、水 が青色になった。 次に、その水溶液に、塩酸を少量ずつ加えていくと、や 溶液中のイオンに着目して説明しなさい。 ⑥ 中和と塩水酸化バリウム水溶液に、硫酸を少しずつ加えていくと, はじ めのうちは沈殿の量が増えていったが、 ある時点で増加しなくなった。 増 加しなくなったのはなぜか。 273011

( 3 )の問題でBの電話料金が3900円なのはわかるのですが、そのあとの解説では Ｃプランの基本料金をc円とすると c＋300 = 3900 と書いてあります。 なぜ c＋300 =3900なのかも分かりませんし、 BプランＣプランともに同じ電話料金ならば、問題文の「Bプ... Read More

4 表は,ある電話会社の料金プラン表 である。図は、1か月の通話時間を 分,その月の電話料金を円とし たときの, AプランとBプランにお けるx,yの関係をグラフで表した ものである。 ただし, 1分未満の通 話時間は切り上げるものとし, 電話料金は基本料金と通話料金の合計とする。 (1) Aプランについて,yをxの式で表せ。 ただし, x≧0とする。 0円 料金 基本料金 プラン (月額) 60分まで A B C 600円 2100円 円 (3) 3つの料金プランを比べると, (2)で求めた通話 時間からの100分間は, Bプランの電話料金が 最も安くなることがわかった。 Cプランの月額の 基本料金は何円か。 0円 通話料金 60分を超えて 120分まで 1分あたり30円 120分を 超えた時間 1分あたり20円 A (45) 1分あたり10円 図 (円) 2100 2400円 1950円 2100円 600 0 IC (分) <兵庫> (2) AプランとBプランの月額の電話料金が同額に なるのは,通話時間が何分のときか。 Aプラン Bプラン 60 (4) Aプランで契約している人が, 通話時間が60分 より長い月が何回かあることがわかったので 2011年間の電話料金をA,B両プランで比べてみる ことにした。 いま、 月々の通話時間を, 長い月は 75分, それ以外の月は45分とするとき, A, B 両プランの1年間の電話料金が同じ金額になるの は , 75分の月が何回のときか。 A (75) 2850円 49