8比3增加了5了 那就是 10×10×10×10×10作者: flyzoe小猪 时间: 2009-11-25 23:17
你给个题目行吗？这样真没办法帮你解决，不好意思！作者: fengxx1110 时间: 2009-11-26 11:18
哦,谢谢nancy1010 .作者: fengxx1110 时间: 2009-11-26 11:20
不好意思。我以为OG 12 与OG11的数学部分没变化呢。抱歉。作者: fengxx1110 时间: 2009-11-26 11:37
128. If money is invested at r percent interest , compounded annually , the amount of the investment will double in approximately 70/r years. if Pat's parents invested $5,000 in a long-term bond that pays 8 percent interest, compounded annually, what will be the approximate total amount of the investment 18 years later, when Pat is ready for college?作者: fengxx1110 时间: 2009-11-26 11:45
128. 70/r =70/8=8.75≈ 9 years 5000*2*2=$20,000 请问两个2各自的意思？作者: keaneice 时间: 2009-11-26 11:50
128. 70/r =70/8=8.75≈ 9 years 5000*2*2=$20,000 请问两个2各自的意思？
-- by 会员 fengxx1110 (2009/11/26 11:45:21)
the amount of the investment will doublein approximately 70/r years
根本没看过og的数学，帮不上忙了，呵呵作者: fengxx1110 时间: 2009-11-26 21:59
请教一题 87. A necklace is made by stringing N individual beads together in the repeating pattern red bead, green bead,white bead, blue bead, and yellow bead. if the necklace design begins with a red bead and ends with a white bead,then N could equal作者: fengxx1110 时间: 2009-11-27 08:54
等待解答作者: fengxx1110 时间: 2009-11-27 09:04
再附上题目 23. The profit from the sale of a certain application increase, though not proportionally, with the number of units sold. Did the profit exceed $4 million on sales of 380,000 units? (1) The profit exceeded $2 million on sales of 200,000 units. (2) The profit exceeded $5 million on sales of 350,000 units.作者: fengxx1110 时间: 2009-11-27 09:09
65. How many integers are there between , but not including , integers r and s? (1) s-r=10 (2)There are 9 integers between , but not including, r+1 and s+1.