9−sinf olimpiada I−variant

9-sinf

3-variant

1.Tenglamani yeching:

A) -2 B) 2 C) -3 D) 3

2. Funksiyaning aniqlanish sohasini toping

A) B) C)
D)

3. ni hisoblang.

A) 1 B) 10 C) 100 D) 200

4.Kasrni qisqartiring:

A) B) C)
D)

5.Ifodani soddalashtiring :

А) 1 В) -1 С ) D)

6.Tengsizlikni yeching :
A)
B)
C)
D)

7. 60 km\soat tezlik bilan ketayotgan poyezddagi yo‘lovchi oynadan qarama qarshi yo‘nalishdan kelayotgan poyezdni 4 sekundda o‘tib ketganini kuzatdi.Agar qarama qarshi kelayotgan poyezdning uzunligi 120 m bo’lsa,uning tezligini toping.

A) 55 B) 50 C) 40 D) 48

8.Agar ikki shahar orasidagi masofa 1:3000000 mashtabli xaritada 4,5cm ga teng bo‘lsa , huddi shu masofa 1:2000000 mashtabli xaritada necha (cm) ga teng bo‘ladi?

A) 6,75 B) 67,5 C) 3 D) 0,3

9. Agar parabolaning uchlari nuqtalardan o‘tgan bo‘lsa, p+q ni toping

A) 3 B) 2 C) -1 D) 1

10. ABC uchburchakning A va B burchak bissektrisalarining kesishishidan hosil bo‘lgan burchagi 48° ga teng. C burchakni toping.

A) B) C) D)

11.Agar bo‘lsa b ni qiymatini toping.

A) B) C) D) 12

12. Agar bo’lsa , toping

A) 16 B) 28 C) 82 D) 32

13.Hisoblang:

A) 3 B) C) D) 2

14. Agar va ushbu tenglamaning ildizlari bo‘lsa, u holda
ifodaning qiymatini toping.

15.To‘g‘ri burchakli uchburchakning perimetri 15cm,gepotenuzasi 7cm bo‘lsa ,uning yuzasini toping.

A) 3,75 B) 4,25 C) 4 D) 6,25

16.Parallelogramning bir tomoni ikkinchisidan 5 martta katta. Perimetri esa ga teng. Burchaklaridan biri ga teng.Parallelogramning yuzini toping.

A) 24 B) C) 22 D) 20

17. To‘rtburchakning uchlari va nuqtalarda joylashgan.To’rtburchakning yuzini toping.

A) 28 B) 39,5 C) 33 D) 36

18. а soni sonining 25% ini tashkil etadi. с soni esa sonining 40% ini tashkil etadi. с soni a sonining qancha foizini tashkil etadi?

A) 50 B) 80 C) 100 D) 125

19.Hisoblang:

Javob: ……………………………

20.Radiusi 1 ga teng bo‘lgan aylana burchaklarining kattaligi 1:2:6 sonlariga proporsional uchta yoyga bo‘lingan. Katta yoyning uzunligini toping.

Javob: ………………………………

21. juftlik tenglamalar sistemasining yechimi bo‘lsa ni toping.

Javob: ………………………………

22.Tenglamani yeching:

Javob: ………………………………

23. Ifodaning qiymatini toping:
bu yerda va

Javob: ………………………………

24.Ikki sonning yig‘indisi 40 ga teng. Agar birinchi sonning qismini ikkinchi sonning ikkilanganidan olib tashlansa, u holda hosil bo‘ladi.
Birinchi son ikkinchi sondan qanchaga katta?

Javob; ………………………………

25.Ifodani soddalashtiring agar bo‘lsa ,

Javob; ………………………………