請列步驟~thx ^^
5.a hockey team played 24 games.the number of games that they won was 10 more than that they lost.the number of games that they lost was 2 less that that they tied.how many games did they won,lose and tied?
6.the cost of a keyboard is $20 more than that of a mouse.if Nelson buys 8 mouses,he has to pay $10 less than buying 5 keyboards.how much is a keyboard?
請答2條題~!10 marks thx ^^
2006-10-30 9:34 pm
回答 (3)
2006-11-01 6:59 am
answer it yourself
2006-10-31 1:27 am
let me explane amami_no_kuro_usage`s answer in 5.
5. let x be the no. of games they lost
x+x+10+x+2=24
3x=12 < he took the3 X away became 3X,so the question become 3X+10+2=24
x=4 < so 12÷3= 4
won
=4+10 < 4 is lose
=14
tied
=4+2 < 4 is lose
=6
2006-10-30 17:28:30 補充：
sorry,amami_no_kuro_usage
5. let x be the no. of games they lost
x+x+10+x+2=24
3x=12 < he took the3 X away became 3X,so the question become 3X+10+2=24
x=4 < so 12÷3= 4
won
=4+10 < 4 is lose
=14
tied
=4+2 < 4 is lose
=6
2006-10-30 17:28:30 補充：
sorry,amami_no_kuro_usage
參考: amami_no_kuro_usage
2006-10-30 9:43 pm
係唔係你D工課嚟架? 係就唔該你用吓個腦諗啦! 根本一D都唔難! Set formula 去搵答案啫, 咁都唔識, 你第時點考試呀!
2006-10-30 13:44:30 補充：
就算你比100分我都唔會答你!
2006-10-30 13:44:30 補充：
就算你比100分我都唔會答你!
收錄日期: 2021-04-13 19:18:24
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061030000051KK02268