Odpowiedzi

2009-11-04T17:20:07+01:00
1 ) 6:[5:(-0,15)+1/3] = 6/ (33i 1/3 + 1/3) = 6/(101/3) = 6* 3/101 = 18/101= 0,(1782)

2)
5(4+x)-7(3x-17)<-5
20 +5x -21x+119 < -5
135<16x
x> 8,4375


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2009-11-04T17:20:49+01:00
2) 5(4+x)-7(3x-17)<-5
20 + 5x - 21x + 119 < -5
5x - 21x < -5 - 20 - 119
- 16x < -144 / (-16)
x > -9


2009-11-04T17:31:26+01:00
1 ) 6:[5:(-0,15)+1/3] =
=6/ (33i 1/3 + 1/3) = 6/(101/3) = 6* 3/101 = 18/101= 0,(1782)

2)
5(4+x)-7(3x-17)<-5
20 +5x -21x+119 < -5
135<16x
x> 8,4375