問題詳情
9. （ ）△ABC中， 
=25， 
=30，則△ABC的面積 ？
(A) 80
(B) 150
(C)300
(D) 375
參考答案
無參考答案
內容推薦
- ( )如圖，△ABC中，以B為圓心， 長為半徑畫弧，分別交 於D、E兩點，並連接 。若∠A＝30°， ，則∠BDE的度數為何？(A)(B) (C) (D) 75
- 如圖(五)，ABCDE 為正五邊形，CDFG 為正方形，則∠ADF＝________度
- 4二元一次方程式4x－3y＝20，當x=6時，y=？(A)2 (B) (C) (D) -2
- 下列選項中，哪一個一定是線對稱圖形？(A)銳角三角形 (B)直角三角形(C)鈍角三角形 (D)等腰直角三角形
- 關於二次函數y＝－2(x－1)2＋2圖形的敘述，下列何者錯 誤？(A) 其圖形的對稱軸為x＝－1 (B) 其圖形的頂點坐標為(1 , 2)(C) 其圖形的開口向下 (D) 其圖形為一拋物線
- （ ）在△ABC與△DEF中，若 ，再加上下列哪一個條件後，可使△ABC △DEF？(A)∠A=∠D (B) ∠B= ∠D (C) ∠C=∠F(D) ∠B=∠E
- 3化簡二元一次式(x＋2y－5)－(3x－y＋7)＝？(A)－2x＋3y－12 (B) －2x＋y＋2 (C) －2x＋3y＋2 (D) 2x＋3y－12
- ( )兩直角三角形在下列何種情況下不一定全等？(A)兩股對應相等 (B) 兩銳角對應相等 (C) 一銳角及斜邊對應相等 (D) 一股及斜邊對應相等
- 下列何者為二元一次方程式？(A)3x－2y (B) 2x－3y＝5 (C) x＋5＝0 (D) 5x＋3y＋8
- 甲箱內有 4 顆球，顏色分別為紅、黃、綠、藍；乙箱內有 3 顆球，顏色分別為紅、黃、黑。小賴打算同時從甲、乙兩個箱子中各抽出一顆球，若同一箱中每球被抽出的機會相等，則小賴抽出的兩顆球顏色相同的機
內容推薦
- Wilson Clothing has a wide _____ of different sizes, styles, and colors; all at competitiveprices
- If you like our general approach, I would be happy to discuss the details with you at your_____.(
- 二、文法測驗【請在下列各題中，選出最適當的答案】He is not rich, nor _____ he wish to be.(A) is (B) wasn’t (C) does (D) ha
- If the train had been carefully checked and maintained, the train crash might not _____ lastFrid
- 下列何者能消去二元一次聯立方程式 中的一個未知數?(A) (1)＋(2)×2 (B) (1)×3＋(2)×3 (C) (1)－(2)×2 (D) (1)×4－(2)×3
- He will be promoted to Sales Manager but he does not feel like taking the post. I suggest thathe
- Because of the economic _____, many companies are having hard times.(A) reflection (B) reduction
- The import of any crop _____ by the law in the country.(A) is strictly prohibited (B) will stric
- Supply and _____ are the factors which determine the price of goods and services.(A) partner (B)
- _____ the risks, I think your business plan will be successful.(A) Despite (B) Even if (C) In sp
- Ms. Chen found that there were _____ products than expected in the company warehouse.(A) few (B)
- Taiwan is a treasure island; it has a(n) _____ supply of fruit.(A) rough (B) distinct (C) concret
- A laboratory is a place _____ experiments are performed.(A) how (B) that (C) where (D) which
- The first thing most employers look for in an employee is a good ________.(A) career (B) altitude
- My car is so dirty that I have to go to the car wash and _____.(A) have it washed (B) wash it (C
- The Central _____ is a subsidiary company of the Central Bank of the Republic of China.(A) Cast (
- A: Should I pay for the meal with my credit card？B: ______________(A) I don’t have a credit card
- A: You need a sales receipt to make an exchange, don’t you？B: ______________(A) Yes, but I forgo
- 三、會話測驗【請依照句子前後文意，選出最適當的答案】A: Where is the guesthouse？B: ______________(A) On Friday night. (B) Y
- A: What’s your hobby？B: I like music very much.A: Then you must be a musician.B: ______________.
- _____ receiving your payment, we will process your request.(A) Among (B) Into (C) Within (D) Upo
- A: You’ll wrap this project up over the weekend, right？B: ______________(A) We don’t provide tha
- 試比較下列各二次函數，將圖形開口由大到小排列： (A) 乙 ＞ 甲 ＞ 丁 ＞丙 (B) 丙 ＞ 乙 ＞ 甲 ＞ 丁 (C) 乙 ＞ 丁 ＞ 甲 ＞ 丙 (D) 甲 ＞ 乙 ＞ 丙 ＞ 丁
- A: I wonder what time the agent will arrive.B: ______________(A) Sometime after lunch. (B) The s
- ATM _____ automated (or automatic) teller machine.(A) accounts for (B) responds to (C) short for