Odpowiedzi

2009-09-27T16:50:38+02:00
A = (2⁻¹)⁴ √16 = 2⁻⁴ × 4 = 2⁻⁴ × 2² = 2⁻² = (½)² = ¼
b = 20

b/a × 100% = 20/(¼) × 100% = 8000%
4 5 4
2009-09-27T16:52:51+02:00
A=(½)⁴*√16
a=1/16*4=¼

¼=100%
20-x

¼x=2000
x=500%
5 2 5
2009-09-27T17:15:58+02:00
A = (2⁻¹)⁴ √16 =(½)⁴ razy4= 1/16 razy 4=1/4
1/4 -100%
20 -x

1/4x= 20 razy 100%
x = 2000% razy 4

x=8000%
3 3 3