小四數學...........................????????????????

2007-04-10 6:42 am
各位朋友︰

小女有一分數不明點計,資料如下︰
25/D = D/4

D= ?

請十分鐘內回覆,因明天就要交功課。Thanks.

回答 (9)

2007-04-10 6:47 am
✔ 最佳答案
25/D = D/4

D*D =25*4

D*D =100

D= 10

2007-04-09 22:50:06 補充:
D = 10 or -10但如果你係小四,佢應該唔會考你兩個答案一般 10 這個答案就可以了
2007-04-10 6:57 pm
25X4=DXD
100=D2(係2次方)
D=10
@.@~~
參考: me...信我啦,..我F.2啦
2007-04-10 7:41 am
25/D = D/4

D^2 = 100

D^2 = 10^2

D = 10

2007-04-09 23:42:21 補充:
D = 10 / -10
參考: 自己
2007-04-10 6:51 am
25 D
----=---
D  4
100 D*D
-----=-------
4D  4D
D*D=100
D=10
不過本人覺得奇怪,
既然一題小四的數,
那麼又怎會把中二程度的數當作小四的題目呢﹖
參考: 自己
2007-04-10 6:49 am
25/D=D/4
25x4/D=D
100/D=D
100=DxD
100=2D
100/2=D
D=50
我估下~~我覺得係

2007-04-09 22:51:20 補充:
打錯左係25/D=D/425x4/D=D100/D=D100=DxD100=D2次100開方=DD=10
參考: = =廢物test book(教科書)
2007-04-10 6:47 am
D=10!!!
2007-04-10 6:47 am
D = 10

25/D = D/4
D^2 = 25 * 4 = 100
Therefore, D = 10
2007-04-10 6:47 am
D= 10 / -10

25/D = D/4
25/D*4 = D
25*4 = D*D
100 = D*D
D = 10 / -10
2007-04-10 6:46 am
25X4=DXD
100=2D
D=50

就係咁計喇 .


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