求解 謝謝

28. 如下圖,△ABC中,AD平分∠BAC,DE⊥AB,DF LAC。若AB=10, AC=8,DE=4,則△ABC的面積為多少? F B. C D

不會

5. 右圖(一)為一圓柱形茶杯,底面圓半徑為5公分,若將 500立方公分的水倒入杯中(水未溢出),則水的高度 為 公分。 塞6. 右圖(二)為六角柱的展開圖,底面是邊長為4公分的正六 平方公分。 邊形,則其表面積為 茶杯 12 4(單位:公分) 圖(二)

請問第40題為什麼會是B呢？

ane ng la is n (38~41) 5:00 有点 個 Usually I wouldn't cross the park at this time of night. But walking around the park would take more time, and it was raining so hard that I couldn't even see clearly what was right before me. So I entered the park. And that was the first stupid thing I did tonight. 38 into Soon after I walked into the park, I saw a man under a tree up ahead. My heart fell The stories I'd heard about the park But me? No. I did 39 my head at this moment. Anyone with a clear mind would just turn back. stupid thing: I decided to hurry past him. Just when I was passing the man, he raised his head and gave me the strangest smile ever. I got scared and started running. “Hey!” the man me! shouted from behind. "Wait!" He was running after I ran like crazy. I had hoped the trees would keep some rain off. 40. But they also made the park look even darker. I couldn't see what was ahead of me. Then, I ran into something. It was And they the man! "Don't kill me!" I cried. "What? I 41 gave me my bag. to give back your bag! You dropped it," the man Now, I felt saying that to the man was the stupidest thing I did tonight. 第一部分 作答說明 ( 38 ) are all coming 57%) (47% (C) were all coming 39. (A) another ✓ one ✓ the last ☑ have all come (D) would all come 54%) 51% the other 40. A have 41. (B) did (C) had (D) would was trying (C) would try (B) try ( will try ahead 在前面

想問4 5 6答案和過程

E 2 E ZAEF 在正方形ABCD中,BE=DF,且∠DAF=18° 4 已知△ABC=△DEF,且A、B、C的對應頂點分別為D、E、F、若∠C=90° BAC=5x+2y 平方單位 。 '=3x+2y,DF=8x,EF=3y+6,則△DEF的面積為 BC 5. 若△ABC=△DEF,且A、B、C的對應頂點分別為D、E、F。若∠B=∠E=90° AB=2x,BC=2y+1,DE=5y+2,EF=x-1,則: (1) x= 'y= (2) △ABC的周長= 。 ,△ABC的面積= 平方單位 。 6. 如右圖,四邊形ABCDEFGH均為正方形,且ㄥ1=22= ∠3=∠4, <5=26=<7=<8,EF=EH=HG=FG,則: E (1) △FAE≅△EDH=△HCG= 。 (2)承(1)題,根據 全等性質, 。 F B 8 29-846: NAS 3 IG 2 DH 月日

想請問4-2和6.該怎麼算？謝謝！

3. 中部地區共有10個電視頻道,要將其分配給3個新聞臺,4個綜藝臺及3個體育臺共三種類型。 若同一種類型的電視臺頻道要相鄰,且前面的3個頻道要保留給新聞臺,則頻道的分配方法有 1728種方法。 x 41 x 3 x + ! = 17 28 4. 甲、乙、丙、丁、戊、己、庚7個人要選出5人排成一列,試求以下排列數: (1)選出5個人當中必含甲,則排法有1800 種。 (2)選出5個人當中,恰含甲、乙、丙其中1人,則排法有 (!) 6 C4 × & ! = 1800 X 含甲不舍乙、丙:C3x5!= 種。 5. 用0、1、2、3、4、5這6個數字,可作成① 100 個數字相異的三位數。若將這樣的數字由 到大排列,則第50個數字為② 31 。 (1) 口 5x5x4 = 100 100 = 5X4=20 200 =5×4=20 30:4 3217 = 4 (二)第52個為325 310=4 20+20+4x3=52 可推得第50個為 6. 已知甲、乙、丙、丁、戊、己、庚7個人排成一列,其中甲在乙之左,丙在乙之右,且庚不排在 後一個,則方法數為 -7 1:840 7.有7個字母A、A、B、B、B、C、D,全取排列之,試求下列的排列數: (1)任意排列: 420 。(2)3個B相鄰: (3)2個4相鄰,但3個B都分開: 24 (2) 。 60

求解 謝謝(*¯︶¯*)

B 8.3 8.如圖,矩形ABCD中,AB=9,AD=12,AEBD, 求AE的長? 72 36 (A) 45 (B) 45 (C) (D) 35 8 4 A , B E C

求救ㄍ> < ♡.ᐟ‪.ᐟ

④⑤⑥ 18 如圖(九),正方形ABCD中,E、F、G、H、I、J六 圖點分別在四邊上,且EF、GH、IJ相交於O點。 已知O點恰為正方形 ABCD 兩對角線的交點,若 BH=2,BJ=4,甲面積=乙面積,則BF的長度 為何? (A) 5 (B) 6 诽F (C) 7 (D) 8 A 4 B 2K+8=4k ZE 8=2/ 甲 H 4=2= k+4= k k=4 N 0 G2 KFZ 圖(九)

請教這題🙏 紅色底線的地方為什麼是這樣算？

演練 把2本不同的故事書、4本不同的數學書及1本 英文書排成一列。假設故事書必須排在一起,數 學書也必須排在一起,則這樣的排法共有幾種? 解: (故,故三 (权,权权 31 x 21 x 41 = 6×2×24 =288 445 主文:

算錯

8 右圖是三角柱,底面為正三角 形,則: (1)此柱體體積為何? (2)此柱體表面積為何? 解: (1) 7X8文1060 4 X8X10 320 √3X64X10 === 160, B 42x160.18 4 (2)1603x2+8x4x3 =320√3+96 = 416.53 8 15

求解🙏

( 34.~35.) Hi, I am Jamie. My special place is in a big apple tree by my grandparents' garden. My grandpa built it for my sister and me. To get there, I have to climb up a ladder. Grandpa built it with wood and it also has a roof, so we don't get wet when it rains. I like to sit inside when it rains. The sound makes me comfortable. Sometimes I have food with my sister and cousins there. One day, I wanted to spend the night there, but it was really dark. I was afraid, so I went back to the house. vobiulp? Hi, my name is Karen. My special place is in a park near my home. I go there with my friends. It is not in the center of the park, so few people go there. There is a bench under a tree, and we often sit and talk there. It makes us very happy. There is a beautiful fountain and we often play water in it. It is a great place when the weather is hot. The tall trees there can help us keep out of the sun. In the spring, there are many beautiful flowers. It is more like the country than a park in the city. ladder 梯子 wood木材 roof屋頂 fountain 噴泉 34. Which is the right picture of the special place? (A) Jamie's m.q08 (B) Jamie's uto2 mw onex99W DD 21 Did b Yoineetblirb JUC r t'nob uoY chowezuor apnhd ne .2M dor by glori abbl (C) Karen's (D) Karen's 91blirb ynoma ob of mert b9b not agit aw? smol law by slows bas ov w.moo.zhit.www Jiziv To 1200-0588-40 ( ) 35. Which is NOT true? almid (A) Karen's special place is in the city. wla naniol" bina bom e vodol25 (B) Karen likes to play water with her friends. W mid 10 taong i sno zirli (C) Jamie stayed in his favorite place for nights. (D) There is a garden next to Jamie's special place. smol Jow? (A) M() .smita coin2.0