想請問多選的第2、5為甚麼是對的?第4為甚麼是錯的?謝謝❤❤

全 AV 5 喲 主次 、 設數列Aq,) 滿足gg, =2q,+1, gg=12,3,...。請問下列哪些選項的禾述是正確的? 2 和 (1) 如果aq>0,則g>3 還未1,則2 ~<~-1 數列 1) 是一個等比數列 7(0)4| 2U01廬| (4) 數列 (才) 是一個等差數列 (5) 數列(g,+1)是一個等比數列 二、填充題(8 分 x5 格+4 分x10 格,共 80 分。答案請一律乘開) 1. 上數學課時,老師出了兩個題目給全班作答,已知全班有 41 人,若答對第一題的有28 人, 答對第二題的有21 人,兩題全錯的有8 人,則兩題全對的有 AR

不知道過程~😬謝謝

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20題~謝謝😁

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哪裡錯了呢~謝謝

請問第五題 serve as是當作的意思吧?? 放這裡好怪誒😂😂 感謝!!

上 (A) 【97 北聯】醫療/健康:大笑有助身體健康 Laugh your head of ItS strong medicine, research _I act is good for you, says William Fry, professor_emeritus at Stanford mivbrsity and pioneer in laughter research. It increasesrblood /光 _)and contracts iorpiaal_ muScleS. A hundred belly ]aughs is the aerobic edulvalefmt 于防記 ten minuit arowlng machine, according to Fry. But the benefits go beyond a workout. The most astonishing 三生 0f laugehter?s power comes from a 1997 study of 48 heart-attack patients. 了Half Watehed cormedy ShowS for 30 minutes every day; the rest/? 5 “controls. After a year ten heart attacks, 了6_only two in the group that Watched the shows. ! Does a good laugh really help patients get well? Im a 7 _ experiment at the Uniyersity of California at Los Angeles, called Rx Laughter, sclentists plan to test 說 of ]aughter on children with serilous 過nesses, Including cancer Early fcesUIES Suggest fhat funny videos help kids handle uncomfortable or palnful procedures. Jistinge Ybarra。13, already knows that. He was in great pain when he woke up fiom surgery--z90 Bil Marx anda volunteer for Rx Laughter appeared at his bedside- Marx told jokes。 made faces and pranced around the hospital room. 」“Haying somethi ]augh 移站0 took my mind ofF the pain,”says Justin. 1“Wher ou can t help but feel better” B) at (C) landmark "” (D)until _(E)evidence (9) 有oWwy/ (HH) effect ,/" (Dof (J) compared wilth ga生了2本寺各乜千的 ers are learming Even the |

求解 謝謝🙏

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19題為什麼是D

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1.Why? 2、3怎麼算？

)4.腳踏車前進過程中, 3 1 (八前輪回前。 ,後輪軸前。(B)前輪向後,後輪 身後 (C)前輪向前,後輪向後 _(D)前輸身後,後輸身前 (E)資訊不足,無法判斷。 人知人人

1. 為什麼是E?? 2. 怎麼算 3.為什麼C不正確？

)7.和如圖所示, 一木塊放在水平桌面上, 則其在水平方向上共受到三個力作用 即九=10午頓、吧=4重 頓和摩擦力,且木塊處於玥止狀態。 若此時將五除去, 則木塊在水平方向上所受到的合力為 (A)6 牛頓,向右 (B)4 牛頓,向右 _(C)6 牛頓, 向左 (D)4 牛頓,向左_(E)0。 和 全以太

這5題qq,有答案，需要過程😂