2.5 |
a) 0 b) 5 |
c)8^ |
d)-l^ e)l^ |
2.6 |
m = 5 |
2.7 k*4 4 | |
2.8 |
t = 0 |
2.9 m = 2 | |
2.10 |
a) x = 5 lub x = 5; x |
= 0; brak rozwiązań | |
b) x = -8 lub x = I0; |
x = 1; x = -3 lub x = |
= 5 | |
c)x = -6lubx = 2; x |
; = -nlubxrn: 5 |
i = -4 lub x = 0 | |
d)x = 0lubx=l; x |
= 8; x = -5 2 lub x |
-‘ł | |
2.11 |
*=-i°n | ||
2.12 |
x >5 | ||
2.13 |
a) x = 15. y = 20 |
b) x = -3. y = -1 | |
c)x = §. y=-3 |
d)*—y = | ||
2.14 |
a) x = 5, y= 10 |
b) x = -3, y = -3 |
c) x = 3. y = 0 |
2.15 |
a) np.: 5x + 3y = 3 |
b) np.: -I0x + 16y =1 c)np.:-5x + 8y = 2 | |
2.16 |
y = *l|x + 6 | ||
2.17 |
3 5 | ||
2.18 |
21, 41 |
2.19 2,40 zl; |
4,40 zl |
2.20 |
11,4 |
2.21 90,72 |
2.22 18 |
3. Zadania różne | |||
3.1 |
16; 46; 124 |
3.2 |
160 3.3 1000 |
3.4 |
1500 m2- jabłonie; |
225 m2 - wiśnie; 525 m2 - grusze | |
3.5 |
10.85 zl |
3.6 |
50 m; zmniejszy się o 31,25 m2 |
3.7 |
50% |
3.8 |
Kasia zjadła 7 pączków |
3.9 |
210kg |
3.10 |
15,25 kg; 13,25 kg |
3.11 |
ok. 1,075 kg |
3.12 |
126,25 kg |
3.13 |
4000 zł; 1800/1 |
3.14 |
900 g |
3.15 |
150g; 250g; 420g 3.16 |
12,5 szkl, 16 kg śliwek | |
3.17 |
304 zł |
3.18 |
12 dni; 40%; 60% |
3.19 |
49,5 dnia |
3.20 |
8 lat |
3.21 |
26 lat; 5 lal |
3.22 |
11 lat; 7 lat |