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  1. 排列方式

  1. 翻譯一下「一天只有一次清晨」 yī tiān zhĭ yŏu yī cì qīng chén There is only a daybreak everyday.

  2. 1)精確值 2)自然數 3)整數 4)餘數 5)被除數 6)除數 7)減去 8)因子 9)素數,質數 10)指數表示法 11)真分數 12)假分數 ...

  3. 1 let the coins be x 1x/4=40 x=160 160x3/4=120 120x2=240 a 160 coins b $240 2 let the number of girls be x 3x-4=20 x=8 there are 8 girls 3a 3x ...

  4. ...3(3^y) = 21 ----- L5 12 (4^x) + 8(3^y) = 120 -----L6 L6 minus L5 11(3^y) = 99 3^y = 99/11 = 9 = 3^2 y = 2 Substitute...

  5. ... expressions in words. 1)3+4-2 Add 4 to 3, then minus 2. Add 4 to 3, then subtract 2. 2)13X2+6 13 is ...

  6. ...書在這方面有詳細解釋和說明。 圖片參考:http://www.chinamyopia.org/images/minus%20lens0002A.JPG 對付近視的最佳方法,是消滅近視於萌芽階段...

  7. ...弱) 等效原理的實驗事實:重力質量與慣性質量是相等的(目前實驗證實,在10 − 12的精確度範圍內,仍沒有看到重力質量與慣性質量的差別)。 這一事實也可以 ...

  8. ...1/25 5 ^ 4x = 1 / 5^2 5 ^ 4x = 5 ^ - 2 4x = - 2 x = - 1/2 ( negative x over 3 minus y) times (negative 2x plus 6y) (- x / (3 - y) ) * (- 2x + ...

  9. ...gt; 4y is even => 5-4y is odd (Since odd number minus even number is odd number) It does not meet that...

  10. 34 times the difference of 28 and 6 then minus the quotient of 40 over the difference of 7 and 3 P.S. [  ] = 中括號...