Odpowiedzi

2010-03-03T09:44:12+01:00
A) P=e *f /:f
e=P/f
b)K=b(x+y+z) /:b
K/b=x+y+z /-y-z
x=K/b-y-z
1 5 1
2010-03-03T09:45:46+01:00
P= e * f/:f
p:f=e

zad 2
K= b(x+y+z)
K=bx+by+bz
K-bx=by+bz
-bx=by+bz-K/:-b
x=-y-z+K/b
1 5 1
2010-03-03T09:47:00+01:00
A)
P=(e×f)÷2 /×2
2P=ef /÷f
e=2P÷f
b)
K=b(x+y+z)÷4 /×4
4K=b(x+y+z) /÷b
4K÷b=x+y+z
x=(4K÷b)-y-z