Page 428 - 8_Snf Tane Tane Matematik

BÖLÜM

1
) 2(x + 5) < 3(x – 1), 3. K P R M
2x + 10 < 3x – 3, 13 < x 30 P
A
) 3 (x + 1) ≥ 2(x – 1), 3x + 3 ≥ 2x – 2, 30 60°
x ≥ –5 30° 60° 50° S
30°
) 4x + 6 < 3x – 21, x < – 27 N
) 8x – 16 ≥ 7x – 21, x ≥ –5
3. ) 6, ) 14, ) 12, ) 3 25° 40
35°
70°
25°
35°
4. 2x + 6 > 3x – 5, 11 > x, x = 10 50° L 80° 40° 40° R S S T
40
20
B
5. 7x + 15 > 12x, 15 > 5x, 3 > x, x = 2 P 20 R R M P
K
6. ) x < 13, ) x < 5, ) x > 20 M
A P
7. ) 2(2x + 8) < 3(x + 12), 4x + 16 < 3x + 36 45
60°
30° 60° 30° x < 20 45 50° 25 S N
25
20
) –4 ≥ 4x, –1 ≥ x, x ≤ –1
35° 25° R S S T
–1
70° 35° 25° 50° 80° 40°
L
32
B ) –8x + 40 < –2x – 24, 64 < 6x, x > 40° P 20 20 R M P
3 R
32 / 3 M
4. Çözüm kitabın üzerinde.
) 6x + 15 ≥ 15x – 30, 45 ≥ 9x, x ≤ 5 N
5. 180° – (50° + 60°) = 70°
5 70° ÷ 2 = 35° = m(CëBD)
) x + 17 > x + 1 , 180°– (60° + 35°) = 85° = m(BëDC)
3 2
S
R
S
2x + 34 > 3x + 3, 31 > x 6. 3x + 2 = 5x – 8 BC = 2 . BD T
10 = 2x = 2 . (3 . 5 + 2)
31 x = 5 = 34 cm P
) 2x – 5 < 3x + 3, –8 < x, x > –8 7. A 8. Çözüm kitabın üzerinde.
K
–8 D 9.
A A A C
ÜÇGENLER
Üçgenin Yardımcı Elemanları 75°
(syf:297) 20°20° 10 cm 10 cm 10 cm
1. D B C 70° E F L 80° M
70°
A P B 3 cm 3 cm C B 3 cm 3 cm C B 4cm 8 cm C A B
4cm 80
A D K 6 cm
c
V b
c A A A C
V
b
B V a 75° 5 cm
S
a 10 cm 10 cm 10 cm
C 20°20°
E F R 5 cm
D B C E F L M
A P 70° 70° 80° 75
B 3 cm 3 cm C B 6 cm C B 8 cm C A B
c
V b
c 10. ) y = 12 cm, x = 6 cm, z = 12 cm
V A D K
b
B V a
S ) y = 6 cm, x = 10 cm
a
C ) y = 10 cm, z = 4 cm
E F R
) x = 12 cm
2. Çözüm kitabın üzerinde.
B C E F L M 11. m(AëKB) = 90°, 180° – (90° + 70°) = 20° =
m(KëBA)
12.  TK= 4 . 3 cm = 12 cm’ dir.
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