Matematika 8 sinf uchun test savollari I variant

Matematika
8 sinf uchun test savollari
II variant

1. 
   f(-2)=3 va f(2)=5 shartni qanoatlantiruvchi chiziqli funksiyani aniqlang.
   

A) B)f(x)=2x-1 C) f(x)=2x+1 D) f(x)=3x+9

2. 
   Agar
   

bo`lsa, x(y+7) ning qiymatini toping.
A)16 B)18 C)20 D)14

3. 
   ABCD to`g`ri to`rtburchakning A burchagi bissektrisasi BC tomonniuzunliklari BM=16sm va MC=14sm bo`lgan ikki qismga ajratadi.To`g`ri to`rtburchakning yuzini toping.
   

A)500sm² B)420sm² C)480sm² D)510sm²

4. 
   Hisoblang:
   

A) 15 B) C) D)

5. 
   ekanligi ma’lum bo`lsa, kasrning qiymatini toping.
   

A) B) C) 1,5 D) 2,4

6. 
   Taqqoslang: va
   

A) > B) < C) = D)

7. 
   Hisoblang:
   

A) 270 B) 282 C) 280 D) 28

8. 
   Kvadratning perimetri 20% ga uzaytirilsa, uning yuzi necha foiz kamaygan?
   

A)20 B)25 C)40 D)44

9. 
   Ikki doira yuzlarining nisbati ga teng,katta doiraning radiusi 9dm. Kichik doiraning radiusini toping.
   

A) 3 dm B) 6 dm C) 4 dm D) 2 dm

10. 
    Ifodani soddalashtiring: , bunda .
    

A) B) C) D)

11. 
    Tenglamani yeching:
    

A) B) C) D)

12. 
    Tenglamani yeching:
    

A) B) C) D)

13. 
    q ning qanday qiymatida tenglamaning ildizlari kubining yig`indisi 19 ga teng bo`ladi?
    

A) 6 B) 5 C) 7 D) 4

14. 
    Soddalashtiring:
    

A) B) C) 0 D) 2

15. 
    Uchburchakning uchlaridan unga ichki chizilgan aylananing urinish nuqtalarigacha bo`lgan masofalar 2;3 va 5 ga teng bo`lsa, uchburchakninig perimetrini toping.
    

A) 19 B) 18 C) 24 D) 20

16. 
    Agar va bo`lsa, vektorning modulini toping.
    

A) 11 B) 14 C) 13 D) 12

17. 
    Tomonlari 8,10 va 14 bo`lgan uchburchakning yuzini toping.
    

A) B) C) D)

18. 
    Uchburchakning o`rta chizig`i asosidan 5,4 sm kichik. Uchburchakning o`rta chizig`I va asosining yig`indisini toping.
    

A) 13,5 sm B) 16,2 sm C) 10,8 sm D) 21,6 sm

19. 
    ni soddalashtiring.
    

A) B) C) D)

20. 
    Hisoblang.
    

A) B) C) D)

21. 
    A₁ nuqta OX o`qiga nisbatan nuqtaga simmetrik, A<sub>2</sub> nuqta OY o`qiga nisbatan A₁ nuqtaga simmetrik bo`lsa, A₂ nuqtaning koordinatalarini toping.
    

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22. 
    Teng yonli to`g`ri burchakli uchburchakning gipotenuzasi ga teng bo`lsa, uning yuzini toping.
    

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23. 
    AB vatar 56⁰ li yoyni tortib turadi. Vatar va shu vatar oxirlaridan aylanaga o`tkazilgan urinmalar orasidagi burchakni toping.
    

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24. 
    0,00280128 sonini standart shaklda yozing.
    

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25. 
    Agar ekanligi ma`lum bo`lsa, ni toping.
    

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26. 
    Hisoblang:
    

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27. 
    Tenglamaning ildizlari yeg`indisini hisoblang:
    

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28. 
    Teng yonli trapetsiyaning diagonallari to`g`ri burchak ostida kesishadi. Asoslarining yig`indisi 2а ga teng. Trapetsiyaning yuzini toping.
    
29. 
    Tengsizliklar sistemasini yeching:
    
30. 
    Yuzasi 144 sm², balandliklari 8 sm va 12 sm bo’lgan papallelogramning peremetrini toping.