1. without using a calculator, find the values of the following expressions, and express your answers in scientific notation.
(a) (3 000 000)^3 / 5 400 000 000
*please show the process, thanks.
F.2 maths (1 short question only)
2007-02-28 3:19 am
回答 (2)
2007-02-28 3:28 am
✔ 最佳答案
3 000 000=3x10^654 00 000 000=54x108=2x3^3x10^8
(3 000 000)^3=3^3x10^18
SO,(3 000 000)^3 / 5 400 000 000
=(3^3x10^18)/(2x3^3x10^8)
=(10^10)/2
=5x10^9
2007-02-28 3:33 am
3 000 000^3/ 5 400 000 000
= (3x10^6)^3/(5.4x10^9)
= (2.7x10^19)/(5.4x10^9)
= (1x10^10)/2
= 5x10^9
= (3x10^6)^3/(5.4x10^9)
= (2.7x10^19)/(5.4x10^9)
= (1x10^10)/2
= 5x10^9
收錄日期: 2021-04-13 00:34:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070227000051KK03509