数Aの確率の問題です 緑色の丸のところの2分の1はどこから来たのでしょうか 自分は2分の1ではなくここは1と考えたのですが、 なぜ2分の1になるのでしょうか？

1380 基本 例題 53 平面上の点の移動と反復試行 00000 右の図のように、東西に4本, 南北に5本の道路がある。 地点Aから出発した人が最短の道順を通って地点Bへ 向かう。 このとき、途中で地点を通る確率を求めよ。 ただし,各交差点で、東に行くか, 北に行くかは等確率 とし,一方しか行けないときは確率でその方向に行く ものとする。 A 基本52 指針 求める確率を A-PBの経路の総数 ABの経路の総数 CC から、 どの最短の道順も同様に確からしい場合の確率で、 本間は道順によって確率が異なる。 11.1 C₂ とするのは誤り!これは、 解答 例えば、Att→→P→Bの確率は ・1・1 22 2 1111 A→→P→Bの確率は したがって,Pを通る道順を、 通る点で分けて確率を計算する。 2222 右の図のように、 地点 C, D, C, D', P'をとる。 Pを通る道順には次の3つの場合があり,これらは互いに排反で ある。 [1] 道順A→C→C→P この 1/2×1/2×12×1×1-(12)=1/23 は [2] 道順A→D→D→P C D P (2 C D' Pr A この確率は C(1/2)(1/2)x1/2×1=3(1/2)=1/150 16 [3] 道順AP'→P この確率は よって、求める確率は 1 + 00 16 + 36 6 32 = 16 1 32 [1] fff →→ と進む。 [2] ○○○と進む。 〇には、1個と 12個が入る。 [3] ○○○○ ↑と進む。 〇には、2個と 12個が入る。

答えがないので分かる方確認していただきたいです🙇‍♂️ 16.B 17.D 18.D 19.A 20.A で合っていますか？

(C) adopt (D) adopts whether they should develop new financial products for next year. (C) considered (D) considering 16. The recently (A) adopting guidelines for budget allocations will be subject to review. (B) adopted 17. They are (A) consider (B) considers 18. We need to summarize the reports (A) publishing (B) published 19. At the interview last week, Mr. Coleman benefits. (A) informed 20. The ABC Store, (B) informing in this medical journal by next Tuesday. (C) publish (D) are published me about the starting salary and (C) was informed (D) to inform customers with a variety of useful products, has announced that they are opening stores abroad. (A) provided (B) is provided (C) provides (D) providing

答えあっていますでしょうか🥹🥹

以続詞 25. ( ) she has gone to Paris on business, Ms. Brown is not here now. Since 2 Before 3 Though 4 When HST 〈城西大〉 26. () it was the end of the month, the bank was very crowded with customers. Because 2 Because of 3 While 27. We should not look down on a person ( ) he is poor. 〈城西大〉 4 During liw 一彼が貧しいからといって、私たちは人を見下してはいけない but because ⑩because 2 why jud nee8 90 3 and 4 but ~だからといって…なる松山大〉 28.( 4 When 〈工学院大〉 Doy ( 7 2A (1) 4 though <中部大〉 ) that you are old enough, you must do it yourself. ①Because ~ Now 3 Though 29. You should not keep pets (28) you take good care of them. 1 if unless otherwise 30. We will be able to accept your offer () that you assure us that the agreed price will stay unchanged. (*) decided 2 proposed "1 ③provided suggested ④ <学習院大 > sausood 31. "Couldn't you make the price on this car one million and a half?" 窪田 条件 "Well, all right, ( ) that you pay in advance." 1 in case 2 in circumstance ③ for good ④ on the condition ~という条件で/もしてならば 〈大阪産業大 > 32. ( ) the passenger sitting next to you wasn't feeling well, what would you do? ②Suppose 2 Remember 3 Think 4 Act 〈摂南大〉 もし~ならば

66番、67番が分かりません、、😭😭他の問題もあってますか、、？🥲

63. 間もなくその問題について議論が始まるでしょう。 (1語不要) be/ long/soon/won't before / start discussing / the issue / if / be / they )〈中央大) before they start discussing start discussing the issue It worst be long before they 64. 健康は失ってみて初めてそのありがたさがわかるものだ。 auroth We do not health/lose/ of / realize / the value until / we it. roalize the value of health until we lose □ 65. そんなにいいものじゃないけれど この古い服を着てもいいよ。 〈北里大〉 You can (even / though/clothes / old / they / these / are / wear) not very nice. 〈中央大) were these old clothes even through they are 66. 私はとても緊張していたので,何を言えばいいかわからなかった。 undizzoq on al 919dT (0) I was (a / at/for/I/loss / nervous / say so that / to / was / what ). jon bluos 67. 一度自由の味を知った人にとって, それは手放しがたい。 <日本獣医生命科学大〉 (d) Freedom is hard for people to experienced / give / have / it / once / they / up ). nebiasiq helps old to work at workvi 文化大 < 立命館大 〉

この英文から、なぜ筆者のプランは毎月100ドル以上かかったと言えないのか教えてほしいです

B You are a college student going to study in the US and need travel insurance. You find this review of an insurance plan written by a female international student who studied in the US for six months. 0 There are many things to consider before traveling abroad: pack appropriate clothes, prepare your travel expenses, and don't forget medication (if necessary). Also, you should purchase travel insurance. Imam gavo 0012 1ovo od 1200 sla When I studied at Fairville University in California, I bought travel insurance from TravSafer International. I signed up online in less than 15 minutes and was immediately covered. They accept any form of payment, usually on a monthly basis. There were three plans. All plans include a one-time health check-up. gisinal The Premium Plan is $100/month. The plan provides 24-hour medical support through a smartphone app and telephone service. Immediate financial support will be authorized if you need to stay in a hospital. It had the 24-hour telephone The Standard Plan worked best for me. assistance and included a weekly email with tips for staying healthy in a foreign country. It wasn't cheap: $75/month. However, it was nice to get the optional 15% discount because I paid for six months of coverage in advance. If your budget is limited, you can choose the Economy Plan, which is $25/month. It has the 24-hour telephone support like the other plans but only covers emergency care. Also, they can arrange a taxi to a hospital at a reduced cost if considered necessary by the support center. I never got sick or hurt, so I thought it was a waste of money to get insurance. Then my friend from Brazil broke his leg while playing soccer and had to spend a few days in a hospital. He had chosen the Premium Plan and it covered everything! I realized how important insurance is-you know that you will be supported when you are in trouble.

答えがないのでわかる方確認していただきたいです。 11.c 12.B 13.B 14.A 15.B であっていますか？

11. A draft of the meeting agenda must be (A) showing 12. Because of insurance. (A) rise (B) show to the director first. (C) shown (D) shows medical costs for their dogs, many owners decide to get pet (B) rising (C) rose (D) risen 13. All staff at Brooks Laboratory can receipt. for the cost of the move if they submit a (A) be reimbursing (B) be reimbursed (C) have reimbursed (D) have been reimbursing 14. This hotel is popular with airplane lovers as you can see all airplanes from the rooms. (A) arriving (B) arrived (C) arrives (D) arrive 15. Because of the snow storm, the starting time of the entrance examination 10 a.m. _ until (A) has been delayed (B) will be delaying (C) delay (D) delaying

答えは①です。②と④はどこがいけないんでしょうか？？おねがいします🙇🏻‍♀️

7. You ( ) tomorrow if you have something else to do. ① needn't come (3 don't come (2 needn't to come (4 don't need come

答えは③です。私は①かなと思ったんですけど、どうしてダメなんですか？？おねがいします🙇🏻‍♀️

8. ( る he caught the morning train, he'd be enjoying this lunch with us now. 抜き aren't ① If とする 2 Did 3 Had 4) Were

この1番でなんでこうやって問いちゃだめなのか教えてほしです！ 解説見たらこのやり方は与えられた条件を考えると無意味と書いててどうしてそうなのか分からないです。

b (-b) n 5-9 X G-b 4 a X40 (6-b) 76-(5-a) 4ac6b) 7b (5-a) = 4a (6-6) 35b-7ab=299-4ab -3ab424a+356=0

この問題の3番が分からないので教えてほしいです！ 特に、解説の 2r_{1} <= AD = 8 よって、 r_{1} <= 4 ・・① 2r_{2} <= AD = 8 よって、 r_{2} <= 4の部分がよく分からないです。

ポイント 演習問題 59 2円の半径を1,2 (2), 中心間の距離をdとす ると,2円の位置関係は次の5つ ① 離れている 11- ld 2 ② 外接する 12 r1 d d>ri+r2 d=r1+r₂ ③ 異なる2点で交わる ④ 内接する d rr<d<rtr ⑤ 一方が他方に含まれる dr2 d=r-r2 r2 d<r-r2 r1- D O2 右図のように, 長方形ABCD の内部 に,互いに外接する2つの円C1, C2 が ある. C1 は AB, BC, C2 は CD, DA に それぞれ接している. C1, C2 の中心を それぞれ 01, Oz, 半径をそれぞれ,r とする.O」 を通り ABに平行な直線と, O2 を通り BC に平行な直線の交点をE A CE 5 9 とする. ただし, AB=9, 0102=5 とする. (1) O,E, AD の長さを求めよ. X B (2) C. C2 の面積の和をSとするとき, Sをnで表せ.x (3)のとりうる値の範囲を求めよ. x (4)Sの最大値、最小値を求めよ. × C