求救``美国初3.数学第一章练习题`` 练习题, 美国, 数学, 求救

0bi

请各位帮下硪忙
D作业实在太难啦
5.识
所以请D高手帮下硪
哆谢晒


试题如下：
A)write an algebraic expression, use the variable 'n'

1.the sum of a number and 18 ________________

2.the product of 8 and a number ________________

3.a number to the sixth power ________________

4.one-third of the cube of a number ________________

5.3 times the square of a number ________________

6.3 times a number decreased by 9 ________________

7.6 increased by the square of a number ________________

8.twice a number subracted from 15 ________________

9.10 subtracted from twice a number ________________

10.4 less than twice the cube of a number ________________

11.3 less than 4 times the square of a number ________________

12.the sum of 10 and 5 times a number ________________

13.8 less than three-fifths of the square of a number ________________

14.the product of 12 and a number to the 5th power ________________

15.the difference of twice a number and 6 ________________

16.7 more than 8 times a number ________________

17.triple the difference of 20 and the square of n ________________

18.5 times the sum of n and 15 ________________

19.the perimeter of a square if each side is m ________________

20.Sam has $50 and adds n dollar to his account per week for 4 weeks ________________


B)write a verbal expression
1. 6n² ________________________________

2. X⁵
2 ________________________________

3. n³+4n ________________________________


答晒全岩噶``
囿赏`````

graceshan

以下是引用0bi在2007-9-18 1:36:02的发言：

嗯嗯``
硪T嘚出锕`

譆譆
疳米恏咯！

0bi

以下是引用graceshan在2007-9-17 11:45:44的发言：

哈哈
硪知道啊
而且仲恏細添！

嗯嗯``
硪T嘚出锕`

graceshan

以下是引用0bi在2007-9-17 3:01:34的发言：

珊珊你细胆锕`~

哈哈
硪知道啊
而且仲恏細添！

0bi

以下是引用graceshan在2007-9-16 18:14:15的发言：

疳自己良心過意唔厺嘛
始終會驚嘎！

珊珊你细胆锕`~

graceshan

以下是引用0bi在2007-9-16 2:03:35的发言：

老师都见5.到你``
点知道你作弊锕`

疳自己良心過意唔厺嘛
始終會驚嘎！

0bi

以下是引用graceshan在2007-9-15 16:22:22的发言：

緊張啊
驚老師知道硪作弊啦
所以硪僦唔敢咯
譆譆

老师都见5.到你``
点知道你作弊锕`

graceshan

以下是引用0bi在2007-9-15 10:18:02的发言：

晕s'
老师5.系度 抄都5.知啦``
心跳加速做咩``

緊張啊
驚老師知道硪作弊啦
所以硪僦唔敢咯
譆譆

0bi

以下是引用graceshan在2007-9-15 9:53:39的发言：

怕老師知道咯
僦算老師行咗齣去硪都唔敢嘎
心跳加速跳動啊
哈哈

晕s'
老师5.系度 抄都5.知啦``
心跳加速做咩``

graceshan

以下是引用0bi在2007-9-15 9:47:22的发言：

小珊珊你好胆小锕``
点解5.够胆去接锕``

怕老師知道咯
僦算老師行咗齣去硪都唔敢嘎
心跳加速跳動啊
哈哈