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Q2. any missing parts? 2008-08-26 10:22:23 補充： 1. let the ... are 1/8 and 2/3 2. should be some missing information, pls clarity 3. factorise 240, give...

745 - 700 = 45 830 - 745 = 85 915 - 830 = 85 observed that the prossible pattern should be 45, 40, 45, 40, 45 ... , while the missing numbers should be 785 and 870. i.e. 745 - 700 = 45 785 - 745 = 40 830 - 785 = 45 870 - 830 = 40 915 - 870 = 45

Let x rubbers did Miss Wong buy last week : Last week price of each rubber = 140/x , This...

...x-1)(3x+(b+3))=0. 只知a≠b 及 b= (-a-3) 實能計算 a 及b. Any missing information?

Have u miss type theta for x? Just use the formula cos^2 A - sin^2 A = cos 2A So the integrand is merely cos x Indefinite integral of cos x = - sin x + constant

Mr.Choi有一個蛋糕, 他跟 Miss .Tang分享。Mr.Choi取了蛋糕的3份,剩下的給了 Miss ...

3. let Miss Lam withdraw x $20 banknotes, y $50 banknotes x+y=142...2840 .....(3) (2)-(3) 30y=960 y=32 put y=32 into (1) x=142-32 x=110 Miss Lam withdraws 110 of $20 and 32 of $50 2008-08-12 20:35:13 補充...

...17，－16，－15，... 判斷－60是否數列的其中一項。 我知個答案係「是」,但係 miss 問我地應該點樣先可以快d計到,個數係定唔係?? Sol a1=－19 d=a2－a1...