求解謝謝🐟 3-4全等三角形應用

DD 公分 , 則 DE 313 公分。 3√13 2. 如右圖(一),梯形ABCD中,∠C=∠D=90°,AD=7 BD=25。若AB的中垂線恰可通過C點, B. A Z 則 CD = 。 3. 如右圖(二),BD為∠ABC的角平分線,且AB<BC, AD = CD 。 若∠ABC=80°,則∠A+∠C= B' 圖(一) 圖(二) 度。 4. 在等腰△ABC中,AB=AC=8,已知L為AB的中垂線且交AC、AB於D、E兩點 若AD=5,則四邊形BCDE面積為 8 5 AD 45公分 A

求解謝謝 3-4全等三角形應用

10. 如右圖,△ABC與△CDE均為正三角形。今連接AE與 BD, 若△BCD 的面積為2√ 3,AC=4,則△ABE的 面積為 C E 11. 如右圖,坐標平面上有4(8,0)、B(06)兩點,CD 為AB的中垂線且交x軸於C點,則C點的坐標為何? 【解 C84(8,0), B-6) 10 2. 如右圖,△ABC中,∠C=90°, AC=12, BC =9, AD平分∠BAC,則CD = ? AB=15 S B D 2 C

想請問(C)選項的動作為什麼不是has to ①get up ②take a bus，而是 ①has to get up ② takes a bus？ (① ② 表示第一個動作 第二個動作) 謝謝🙂

8. Which sentence is right? was (A) He studied and works in America, but he has been born in Taiwan. (B) He didn't feel like go to school, so he lied to his mother and played computer games at [home all day. going (C) John works in Taipei but his wife lives in Hsinchu. Living with his wife in Hsinchu, John has to get up at five and take a bus to work for two hours every day. Hsinchu 新 () Tell me who didn't turn off the lights and close the door in the classroom before going to the gym.

很急，請問（D）（E）怎麼解釋？

X4. 4.設<an>、<b>、<C>為三實數數列,<a>為收斂數列,且對所有的正整數 n ,an<brCn<a,4)均成立,試選出正確的選項。 (A) lima=lim and n→00 n→00 夾 (B) lima, = lim (b,c,) # n→00 n→00 <b n+1/n+1 (C)PAC)可能是發散書 13. bn > C₁ = (-1)" Iim (bn Cu) = lim (-1 (C)lim(b,cn)=limb.limen V x→08 n→00 n→00 (D) 對所有的正整數, bCn < batCatt (E)存在正整數,使得a> lim an A N→∞ "Astor antl #an 2

想問為什麼不能A

D T2. healthier, Alice decides to follow the doctor's words-get up early, exercise more, and lose a few pounds. (A) Become og bus (B) Becomes a (C) Becoming A(A) Becomes (D) To become corcere 2 Je aura of

有人會嗎

29% (B)甲:脂質,乙:肝臟 (0) 甲:蛋白質,乙:腎臟 (D)甲:蛋白質,乙:肝臟 39.鎂離子為海水中含量第二多的金屬離子,從海水中提取鎂離子為工業上製造鎂的 方法之一。其步驟如下: 2+ 步驟一:在濃縮的海水中加入氫氧化鈉,會產生氫氧化鎂而沉澱析出。 Mg²+ + 2NaOH→2Na++Mg(OH)z 步驟二:之後再加入鹽酸,經處理後可得到固態的氯化鎂。 Mg(OH)2 + 2HCl → MgCl + 2H2O 潛水 小 情形 向海 水白的 而食 潛 步驟三:電解熔融狀態的氯化鎂即可得到鎂。 電解 MgClh → Mg + Cl2 2929x0.8 b 依據上述方法,在某次製鎂的反應後,共產生鎂960公克,則該次製鎂反應中, 理論上會消耗重量百分濃度為80%的鹽酸共多少公克?(鎂的原子量為24,氯 化氫的分子量為36.5) (A) 1825 89 MgClio Mg+42 My cho Meta (B) 2400 2764×194 24 (C)2920 -2698 √x 4 49 9609 (D) 3650 24 = 4and 4 Mygli foltcle 40 Mg C12 +88120 1450 8083665 Mg(OH)2+2HCl4 960 18 自然

求問 用and和until都很順不是嗎？？

【過率 350 (A) at least (B) even A (C) in fact (D) still 15. F've 15.1've wanted to read The Diary of a Young Girl for months, 38*22% borrowed the book from the library.) (A) and (C) so (B) since (D) until today I finally

2.3.6求講解

1. (D) The old lady sat by the fireplace with her cat (D) 2. ( 13. to lying (C) to lie (D) lying ) The fishing boat moved slowly in the water at (B) in (C) for (D) with 3. (B) This castle appears quietly next to her. (A) lay (B) a large net floating behind it. (A) by dragons. (A) to attack (B) to be attacked (C) to have attacked (D) to have been attacked ) In this game, a person with his or her eyes (C) 4. ( has to spin around several times and then try to pin a tail onto a donkey. (A) cover (B) covering (C) covered (D) to cover a serious fight, but no one 5. (B) Before the accident happened, the couple seems knows the details. (A) having had (B) to have had (C) to have (D) was having Do. (a) Dave can't present the graphs and figures because he seems (A) left (B) leaving (C) to leave (D) to have left his laptop at home.

想問25 26題 #為什麼25答案是A #26答案是B

23. 24. 25. 26. 27. B A May can't focus at night. Lily study in the morning. They (A)No only; but also (B) Both; and Either; or (D) Neither; nor Tom bought a pair of new shoes, and (A) so does (B) so did (S) neither does (D) neither did We have been to Japan twice, and (A)so have they (B) so do they (C) neither have they (D) neither do they A: I haven't finished my English report. B (A) I have, too. (B) I haven't, either. (C) So do I. (D) Neither do I. Neither Tom nor Jerry in different schools. Maggie. my classmate. We study 3 3

求解

(A) came; walked (B) came; walking (C) come; walked (D) come; walking ) Don't worry about your report. John will come and help when A finished 5. The car hit a tree and made a loud (B) finishes he (C) will finish Dis D) is finishing his.