1. m+3/2= -4m
2. 3D/4+12=3D
3. s/3+ -0.2(1-3s)
唔該...
F.1數學
2007-11-21 4:33 am
回答 (3)
2007-11-21 4:56 am
✔ 最佳答案
1. (m+3)/2= -4mm+3 = 2(-4m)
m+3 = -8m
9m = -3
m = -1/3
2.3d/4+12 = 3d
3d/4 = 3d﹣12
3d = 4(3d﹣12)
3d = 12d﹣48
-9d = -48
d = 48/9
d = 16/3
3. s/3+ -0.2(1-3s)??你應該打錯左個等號成加號...
s/3 = -0.2(1﹣3s)
s/3 = -0.2﹣(-0.6s)
s/3 = -0.2+0.6s
s = (-0.2+0.6s)3
s = -0.6+1.8s
-0.8s = -0.6
s = 0.75
2007-11-21 4:59 am
1.m+3/2=-4m
m+1 1/2=-4m
1 1/2==-4m-m=3m
1 1/2=3m
1.5/3=m=0.5
2.3D/4+12=3D
3/D=3D-12
m+1 1/2=-4m
1 1/2==-4m-m=3m
1 1/2=3m
1.5/3=m=0.5
2.3D/4+12=3D
3/D=3D-12
2007-11-21 4:59 am
1. 5m = -3/2
10m=-3
M=-3/10 //
2. 3D/4 +12 =3D
3D +48 =12D
9D =48
D=48/9
D=16/3 //
3. s/3 + -0.2(1-3s)
點解冇等號 的 ??
如果 s/3 = -0.2(1-3s)
s=-0.6 (1-3s)
s -1.8s = -0.6
-0.8s = -0.6
s=0.6/0.8
s=3/4 //
10m=-3
M=-3/10 //
2. 3D/4 +12 =3D
3D +48 =12D
9D =48
D=48/9
D=16/3 //
3. s/3 + -0.2(1-3s)
點解冇等號 的 ??
如果 s/3 = -0.2(1-3s)
s=-0.6 (1-3s)
s -1.8s = -0.6
-0.8s = -0.6
s=0.6/0.8
s=3/4 //
收錄日期: 2021-04-13 17:44:53
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