想知道第一個步驟的轉換是為什麼

(1)已知3x:2y:z=3:8:7,且y=20,則 2x+z=? (2)若(x-2):(y+1):(z+4)= 4:56,且3x+2y+z=280,則x:y:z = ? 回確炸中 38 L (1) α = y = z = 3 ⋅ 7 · 1 Z 2 4 = 20 = 1 = 20 => 8 = 5 0010+35=454 STO) 3.5=5 7.5=35 0 (0)

請問12、22、26詳解

✓ 1 Jason is too scared to say 20. Don't push him too hard. Do C A what did he see (C) who is he with (B) how this could happen (D) what make him unhappy 13. A: Do you know when the new bridge ne u? B: In two months. I can't wait. (A) will build (C) is going to be built (B) was built has been built

請問22題要怎麼分辨是B還是D

二、題組:每題4分,共52分 (21~23) Dear Mom, It's been three months since I was in Bluepool, which is a pretty small town. Schools here begin at the end of August, and I 21. a great time teaching Chinese here. I'm now living in an apartment with a friend. From my bedroom, I can see a beautiful river. Many people go to the riverside 22. to have a picnic 22. to fly kites. I enjoy taking a walk along the river after work. D B I miss you and Dad so much. Hope to 23. you soon. riverside 21 (A) was having (B) would have (C) has had 22. A neither; nor (C) both; but also (B) either; or Love, Rebecca (D) am having (D) not only; and (23 (A) deal with (B) dream about (C) hear from (D) act on (24~26.)

為什麼between間不用再加其他東西

通過率 38% 4. Beverly eats lots of snacks mealtimes. (A) after (C) during meals. That's why she is often too full to eat anything at (B) between (D) from 【110.③】

想請問這題的第二小題要怎麼算？

9. 某公司生產玩具,一箱有40件,其中有4件不良品。設甲向該公司訂一箱玩具,檢驗 的程序如下: 在一箱40件的玩具中,隨機抽取2件檢驗(一次抽取1件,取後不放回,共取2件) 若2件均為良品,則整箱收購,否則整箱退貨。試回答下列各題。 (1)已知甲第一次抽到良品,則該箱玩具被退貨的機率為何? 7 C (A) TO (B)- 10 5 26 (C) 4 39 (D) 65 19 (E) 。 100 x (2) 若該箱玩具被退貨的機率要小於10%,則一箱40件的玩具中至多有多少件不良品?

想問為什麼不用用加be動詞

otpot for a hotpot 火鍋 19. I don't see the book on the shelf. Someone must have forgotten to bring it back. ⑤ shelf架子 (A) put (B) be put (C) puts (D) putting

請問這兩題如何解！

2 5 .百貨公司舉辦父親節抽牌送獎品活動,規則如下:主辦單位準備編號1、2、….9的牌卡 十張,其中編號8的牌卡有兩張,其他編號的牌卡均只有一張。從這十張牌隨機抽出四張, 且抽出不放回,依抽出順序由左至右排列成一個四位數。若排成的四位數滿足下列任一個 條件,就可獲得獎品: de-to (I)此四位數大於6400 (II)此四位數含有兩個數字8 例如:若抽出四張牌編號依序為5、8、2、8,則此四位數為5828,可獲得獎品。依上述 【补食中] 規則,共有___個抽出排成的四位數可獲得獎品。 解 【112分科甲】 A 4 味,味如出(005) 李國兩數中,更是視野(n)哦。(更出董 想在5×5的棋盤上擺放4個相同的西洋棋的城堡棋子。由於城堡會名 將同一行或是同一列的棋子吃掉,故擺放時規定每一行與每一列最其 多只能擺放一個城堡。在第一列的第一、三、五格(如圖示畫叉的 格子)不擺放的情況下,試問共有多少種擺放方式? (1)216) 解 (2)240 (3)288 (4)312 03×4-44 (5)360。【113分科甲】

求這兩題怎麼算 國三數學

2 旋轉一周的立體圖形表面積 回答下列各題。 (1)如圖1,有一個長8、寬3的長方形,將長邊緊貼 竿子旋轉一周會得到一個圓柱,如圖2(不考慮 竿子的厚度),則此圓柱表面積為多少? (2)承(1),如圖3,若換成將短邊緊貼 竿子旋轉一周會得到一個圓柱, 如圖4(不考慮竿子的厚度),則 此圓柱表面積為多少? 8 3 圖1 圖2 8 圖3 圖4

有沒有好心人可以給我講講這兩題，我快崩潰了(๑ᵒ̴̶̷͈᷄ᗨᵒ̴̶̷͈᷅)

2.石有一等差數列,前 9 項的和為 54,且第1項「第4項》第7項的和為36 則此等差數列的公差為何? (A)-6 9th) aitant'an=36 Nai 120=10x (B) 301-36 2 12 5a1+3d=12 -nit4d=6 (C)3 (D) 6 a.+3d=120 ( ) 3. 某設計師在長方形空地上鋪設綠、白兩種磁磚, 設計規則如右圖所示。已知他在此長方形空地上 共用了900塊綠色磁磚,若要將此長方形空地鋪 滿,則需搭配多少塊白色磁磚? 900-(2-1)) (A)850 (B) 860 (C) 870 (D) 8809190 n²=900 ( ) 4.將1至9的正整數分別填入右圖的九個圓圈中,若每邊的數 戴二±30億合 字和均為23,則三頂點的數字和為多少? (A)21 (B) 22 (C)23 (D) 24 ) 5.某六邊形的周長為75公分,且其邊長形成一等差數列,已知最長邊為20公 分,則此六邊形的最短邊為多少公分?

這個圖表為什麼有兩個一樣的問題，但是不一樣的結果

(33~35) People in Taiwan never worry about getting hungry at night when there is nothing at home. They can walk to the convenience stores and get anything they want. In fact, in Taiwan, it is not possible that people fail to find a convenience store because it is part of our life. Convenience stores are working 24/7. In other words, finding a place to sit down and take a rest anytime is a piece of cake. In order to grow business, shopkeepers use some smart ways to have the buyers spend more. First, they put the most popular items at the buyers' eye level to let them see the items easily and often. Second, they drive the buyers to buy something cheap and small without thinking too much or give shoppers a special offer like "Buy One And Get One Free." Third, they try to have the buyers stay at the convenience stores as long as possible by setting up a seating area. They think the buyers will buy one drink after another once they stay longer. In a study, 73 teenagers answer two of the questions. The pictures below show their interesting answers. Which of the following do you like? The taste of the foods. The service. The prices of the products. The feelings in the convenience stores. 46 (63%) 132 (43.8%) |12(16.4%) (21 (28.8%) The polite clerks. 16(8.2%) The special offer. |14 (19.2%) The way of showing the products. 121 (28.8%) 0 10 20 30 40 50 Which of the following do you like? The taste of the foods. 18 (24.7%) The service. 11(15.1%) The prices of the products. 40(54.8%) The feelings in the convenience stores. 18(11%) The polite clerks. 29 (39.7%) The special offer. 19(12.3%) The way of showing the products. 17(9.6%) 10 20 30元 40 convenience store 便利商店 level高度 offer 優惠 result 結果 product 商品 46 132 50 A B