In each of the following, use a directed number to represent the underlined
phrase, and state the menaing of 0.
1. The driver is 10m below sea level.
2. The Octopus card was $6 overdrawn.
3. A $200 discount of a camera.
Maths
2008-07-23 9:16 am
回答 (2)
2008-07-23 6:02 pm
✔ 最佳答案
1.-102.-6
3.-200
e d係正負數...
2008-07-23 9:26 am
For each question, you have to make assumption which direction you are taking positve and negative. Let me show you
1. Take the direction above the sea level positive
Answer: -10 m
2. Take the direction with $$$ in the card as positive
Answer: -$6
3. Take the discount as negative
Answer: -$200
Hope all these may help
1. Take the direction above the sea level positive
Answer: -10 m
2. Take the direction with $$$ in the card as positive
Answer: -$6
3. Take the discount as negative
Answer: -$200
Hope all these may help
參考: Me
收錄日期: 2021-04-13 15:51:23
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080723000051KK00185