Q1 0.00032m3 :8/5cm3
Q2 If y:5=(y+4):7,find the value of y
Q3 If x:(x+3)=5:6,find the value of x
Maths Ratio and rate(15points)
2011-05-06 3:53 am
回答 (2)
2011-05-06 4:14 am
2011-05-06 4:10 am
Q1,0.00032m3 :8/5cm 3
=0.00032x100 3 :8/5
=320:1.6
=3200/16
=200/1
=200:1
Q2,y:5=(y+4):7
7(y:5)=5(y+4:7)
7y:35=5y+20:35
7y=5y+20
7y-5y=20
2y=20
y=10
Q3,x:(x+3)=5:6
x/x+3=3(5:6)
x:(x+3)=15:18
x=15
=0.00032x100 3 :8/5
=320:1.6
=3200/16
=200/1
=200:1
Q2,y:5=(y+4):7
7(y:5)=5(y+4:7)
7y:35=5y+20:35
7y=5y+20
7y-5y=20
2y=20
y=10
Q3,x:(x+3)=5:6
x/x+3=3(5:6)
x:(x+3)=15:18
x=15
收錄日期: 2021-04-23 20:48:48
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110505000051KK00938