9 sinf test amallarni bajaring

9 – sinf TEST

1. 
   Amallarni bajaring:
   
2. 
   Proporsiyaning noma’lum hadini toping: 10,4 : 3 =x :
   
3. 
   Ifodaning qiymatini toping:
   
4. 
   Ifodani soddalashtiring: (13x²8xyy² )+( 11x² 9xy+y²)
   
5. 
   Tenglamani yeching:
   
6. 
   x= 2 da y=2x² +5x3 funksiyaning qiymatini toping:
   

7. 
   Parabolaning koordinata o’qlari bilan kesishish nuqtalarining koordinata-larini toping: y=x²4x5
   

8. 
   Parabola uchining koordinatalarini toping: y=x²+6x+5
   

9. 
   y=x² 4x+6 parabola qaysi choraklarda joylashgan:
   

10. 
    Ikki musbat sonning yig’indisi a ga teng. Agar shu sonlarning kvadratlari yig’indisi eng kichik bo’lsa, shu sonlarni toping:
    

11. 
    Tengsizlikni yeching: 2x² 80.
    

A) 0x4; B) -2x2; C) x-2; D) x-2.

12. 
    Tengsizlikni yeching: -x²+3x0.
    

A) x0, x3; B) x>3; C) x0; D) 0<x<3.

13. 
    Tengsizlikni yeching: (x+3)(x4)>0
    

A) x>4; B) x<3; C) 0<x<4; D) x<3, x>4.

14. 
    Tengsizlikni yeching: 4x²+8x3>0
    

A) x> B) x< ; C) <x<1,5; D) <x<1.

15. 
    Tengsizlikning barcha butun yechimlari yig’indisini toping: x²+6x+5<0
    

A) 10; B) 9; C) 9; D) 10.

16. 
    Rombning perimetri 68 sm, diagonallaridan biri 30 sm. Rombning yuzini toping.
    

A) 280 sm²; C) 480 sm²;
B) 240 sm²; D) 48 sm².

17. 
    Teng yonli trapetsiyaning asoslari 8 sm va 16 sm. Yon tomoni 5 sm ga teng. Trapetsiyaning yuzini toping.
    

A) 36 sm²; C) 36,5 sm²; B) 35 sm²; D) 72 sm².

18. 
    Ikkita o’xshash uchburchak yuzlarining nisbati nimaga teng?
    

A) O’xshashlik koeffitsiyentiga; B) Mos tomonlari nisbatiga;
C) Perimetrlari nisbatiga; D) O’xshashlik koeffitsiyenti kvadratiga.

19. 
    Ikki o’xshash uchburchakning yuzlari 50 va 32 ga, ularning perimetrlari yi’gindisi 117 ga teng bo’lsa, har bir uchburchakning perimetrini toping.
    

A) 52; 65; C) 52; 650; B) 520; 65; D) 57; 60.

20. 
    Ikkita o’xshash uchburchak perimetrlariining nisbati nimaga teng?
    

A) O’xshashlik koeffitsiyentiga; B) Mos tomonlari nisbatiga;
C) Mos burchaklari nisbatiga; D) O’xshashlik koeffitsiyenti kvadratiga.
21. >0 tengsizlikning barcha butun yechimlari ko’paytmasini toping. A) 1; B) -1; C) -6; D) 2; E) 0.
22. Katetlari 3 m va 4 m bo’lgan to’g’ri burchakli uchburchakka o’xshash uchburchakning bir kateti 27 m bo’lsa, ikkinchi kateti necha m bo’ladi?
A) 36 B) 30 C) 12 D) 24 E) 32
23. Katetlari 10 sm va 12 sm bo’lgan to’g’ri burchakli uchburchakka bitta burchagi umumiy bo’lgan kvadrat ichki chizilgan. Agar kvadratning bitta uchi gipotenuzada ekanligi ma'lum bo’lsa, kvadratning tomonini toping.
A) sm B) sm C) sm D) sm E)
24. x² + 6x + 5 < 0 tengsizlikning barcha butun yechimlari yig’indisini toping.
A) 10; B) 9; C) -9; D) -10; E) -15.
25. k ning qanday eng kichik butun qiymatida x² - 2(k+3)x + 20 + k² = 0 tenglama ikkita turli haqiqiy ildizlarga ega bo’ladi?
A) k = 3; B) k = 2; C) k = 1; D) k = -2; E) k = -1.