Noah travelled 69km by his bicycle in 5 hours using two different speeds. He travelled at 18km/h for x hours,and 12km/h thereafter.
A)Noah travelled at 12km/h for____________hours.
B)write an equation for x.
C)solve the equation.
f.3 math..plz help
2009-04-11 7:28 pm
回答 (1)
2009-04-11 7:43 pm
✔ 最佳答案
A)Noah travelled at 12km/h for___5 - x______hoursB)The equation for x is :
18x + 12(5 - x) = 69
C)18x + 12(5-x) = 69
18x + 60 - 12x = 69
6x = 9
x = 1.5
圖片參考：http://l.yimg.com/f/i/tw/ugc/rte/smiley_31.gif
收錄日期: 2021-04-21 22:03:37
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090411000051KK00518