Odpowiedzi

2009-11-26T19:38:53+01:00
5-100%
2-x
x=40%

5-100%
13-x
x=260%

8-100%
3-x
x=37,5%

600-100%
12-x
x=2%
2009-11-26T19:39:32+01:00
A)2\5*100%=40%
b)5\13*100%≈38,5%
c)3\8*100%=37,5%
d)12\600*100%=2%
1 5 1
2009-11-26T19:40:24+01:00
5-100%
2-x%
2*100=5*x
x=40%

5-100%
13-x%
5*x=13*100
x=260%

8-100%
3-x%
8*x=3*100%
x=37,5%

600-100%
12-x%
600*x=12*100
x=2%