想請問這題 答案是(0,2,0)

16.已知A(2,4,-1),C(1,0,2),若在軸上取一點B使∠ABC=90° 則點B的坐標為 15%- , 12 1a-2b-4, CT

想問問第3題的第1小題該怎麼解 ¨̮

2 方程式 logx+log(x-3)=1與下列哪一個方程式的 (A)logx(x-3)=1 (C) 10(-3)=1010 (B)x(x-3)=10 (D) 10°·103=1010 (E)x>3,且x(x-3)=10 3 試解下列方程式. (1) 3.2*=5*. (2) log(x+3)=log(x²+3x). 4 試解下列不等式. (1) (0.001) -x-3 <(0.1)2P+5x (2) 2logzx < log2(x+12). (1) 3 (x²-x-3) > 2x² + 7x (2)12

想詢問這題ᵎ

15. 設 cosa, cos B為方程式32x²-16x+1=0的兩根,求cos(a+B)cos(a-B)之值。 答: 0 〔提示:參閱演練4〕 16

為什麼第三題不能選A ？（表示程度的意思）詳解上沒有寫…謝謝！

dupli.ket. voiled ason! sibodabod 15 dote blow 「歷屆試題 請根據句意,選出正確的答案。 2 A loss 101 161 (C). on besloot (D) 1 The government is doing its best to fear that they may soon die out. 99 (A) preserve of (a) annsgi juo beib (8) wob bemis (A) the cultures of the tribal people for 2001 (A) 9100 (B)frustrate使氣餒 (C) hesitate 猶豫 (D) overthrow 打敗 2 Health risks can result from inappropriate storage of bottled water. Besides these issues, bottled water has other disadvantages. 99 936: tilo (A) freezer beb (C) (B) loss szum () (C) toll (8) (D) safety A Extra virgin olive oil has a lower acidity t C ar. (A) degree (3) species (C) rate than virgin olive oil. 109 (P) percent (A) ho (A)

想詢問這題ᵎ

4 坐落在臺北的美麗華 1 1 轉動時間(小時) 0 4 2 34 1 車廂高度為y(公尺) 30 65 100 65 30 摩天輪,其直徑為70 公尺,設立在30公尺 的基座上,因此摩天輪垂直於地面且最低點離地面是30公尺,若摩天輪每 隔1小時轉一圈,小安從最低點坐上摩天輪的車廂,並且在開始轉動時同時 計時,小安的車廂所在的高度為y公尺,每隔15分鐘,測量車廂的高度,並 且得到上表,現在以函數y=asin(b+c)+d(其中a,b, d為正數, c<)來 描述車廂所在的高度,試求a,b,c,d的值.

想問 高一先修有什麼推薦的講義嗎（各科目的

求解😭🙏

13 Sin (90+0') = cost' = 12 cos (90+0') = -sint' = - 5 11.在坐標平面上,兩直線、L的方程式分別為xy+2022=0、 √3x-y+111=0,則兩直線的銳夾角為 解: 度。(9分) |110. 松山高中 41(-2022.0) (0.2022)

14題求大神講解 謝謝

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11題求大神講解 謝謝🙏

II. 文法選擇:10% scoring many points. fom njoj or solil uoy bluoW Itni og B). It's hard to concentrate in It's hard to concentrate in this office with phone DB (A) to ring (B) ring with phone constantly (C) rang B(A) 12. Monica felt upset when she overheard her best friend vdoT (D) ringing gnildie ill of her in class.

右邊框起來的是我們老師補充的用重心性質算面積，但我卡在b dot c 請問要如何求得，感謝回答的好心人🙏🙏

8.設a =2 30: b=3 1. 3v4 = 6 且+6+0=0,試求20+36+4= c 2-6-7 | 25² +35² +421 12=8x 15 | J+62) 小 15+ 22 1 ² = 151 +45-0-412") = 139 +4x-2545-4 49 -15-+25²1=1 C A △AR面得 14 B J 〔搭配單元9〕 =30GB = 3x - √₁₁X1CT² - (1-1) 3x1/2 √9x25