Q: May can swim 200m in 2 minutes 40 seconds. find his speed in m/s.
Q: if 11 : 8 = x : 32,find x
Q: a distance os 2 km is represented by 1 cm on a map.
1]find the scale ofthe map.
maths
2007-08-05 11:37 pm
回答 (3)
2007-08-05 11:42 pm
✔ 最佳答案
Q1: m/s
= (200m) / (2min40sec)
= 200m / 160sec
= 1.25 m/s
Q2:
11:8 = x:32
11/8 = x/32
1.375 = x/32
1.375 * 32 = x
44 = x
Q3:
1cm on a map = 2km in reality
1cm : 2000m
1cm : 200000cm
1:200000
希望幫到你.
參考: myself
2007-08-05 11:47 pm
Q: May can swim 200m in 2 minutes 40 seconds. find his speed in m/s.
200÷ (2×60+40)
=1.25m/s
Q: if 11 : 8 = x : 32,find x
11/x=8/32
11/x=1/4
x=44
Q: a distance os 2 km is represented by 1 cm on a map.
scale: 1cm:2km
1cm:2×1000×100
1cm:200000cm
1:200000
200÷ (2×60+40)
=1.25m/s
Q: if 11 : 8 = x : 32,find x
11/x=8/32
11/x=1/4
x=44
Q: a distance os 2 km is represented by 1 cm on a map.
scale: 1cm:2km
1cm:2×1000×100
1cm:200000cm
1:200000
參考: me
2007-08-05 11:45 pm
A: 1.25 m/s
A: X=44
A: 1:200000
A: X=44
A: 1:200000
收錄日期: 2021-05-03 11:56:44
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070805000051KK02447