1. r/4-2 =r/5+1
2.1/3 a +3a =40
3.2r/3-r/6=21
4.25% of a dozen of eggs have been broken .how many unboken eggs left?
maths
2007-08-31 8:59 pm
回答 (4)
2007-08-31 9:07 pm
✔ 最佳答案
1. r/4-2 =r/5+1r/4-r/5=1+2
r/4-r/5=3
5r-4r=60
r=60
2. 1/3 a +3a =40
a+9a=120
10a=120
a=12
3. 2r/3-r/6=21
4r-r =126
3r=126
r=42
4. 12-(12*25%)
=12-(12*0.25)
=12-(12*1/4)
=12-3
=9
9 unboken eggs left.
2007-08-31 9:32 pm
1.r=60
2.a=12
3.r=42
4.9
2.a=12
3.r=42
4.9
2007-08-31 9:09 pm
1. r/4-r/5 = 3
r/20 = 3
r = 60
2. 10a/3 = 40
10a = 120
a = 12
3. 2r/3-r = 126
2r = 126(3-r)
128r = 378
r = 2.95
4. 12*(1-25%) = 9
r/20 = 3
r = 60
2. 10a/3 = 40
10a = 120
a = 12
3. 2r/3-r = 126
2r = 126(3-r)
128r = 378
r = 2.95
4. 12*(1-25%) = 9
參考: ME
2007-08-31 9:04 pm
1. r/4-r/5=3
r/20= 3
r=60
2. 10/3a=40
a=12
3.r/2=21
r=42
4. 12x(1-25%) = 12x75% = 9
r/20= 3
r=60
2. 10/3a=40
a=12
3.r/2=21
r=42
4. 12x(1-25%) = 12x75% = 9
收錄日期: 2021-04-25 22:00:45
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https://hk.answers.yahoo.com/question/index?qid=20070831000051KK02033