MATHS 中5 4條

2012-02-25 6:56 am

回答 (1)

2012-02-25 8:03 am
✔ 最佳答案
9 P(13,6)

10 適合的數字為2,3,11,13,16,17所求概率為 6/9 = 2/3

25(a) 1/6

(b) (5/6)(1/6) = 5/36

(c) 1/6 + 5/36 = 11/36

(d) 1 - 11/36 = 25/36

23(a) Draw AO,CO∠TOA = ∠TOC = 90=> ∠AOC = 180 - ∠ATC = 136So, ∠ADC = ∠AOC/2 = 68(b) ∠DAC = (180 - ∠ADC)/2 = 56∠BAT = 87 - 56 = 31


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