9−sinf olimpiada I−variant
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9-с матем тест
9-sinf 3-variant 1.Tenglamani yeching: A) -2 B) 2 C) -3 D) 3 2. Funksiyaning aniqlanish sohasini toping A) D) 3. A) 1 B) 10 C) 100 D) 200 4.Kasrni qisqartiring: A) D) 5.Ifodani soddalashtiring : А) 1 В) -1 С ) 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 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) 11.Agar A) 12. Agar A) 16 B) 28 C) 82 D) 32 13.Hisoblang: A) 3 B) 14. Agar 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 A) 24 B) 17. To‘rtburchakning uchlari A) 28 B) 39,5 C) 33 D) 36 18. а soni 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. Javob: ……………………………… 22.Tenglamani yeching:
Javob: ……………………………… 23. Ifodaning qiymatini toping: bu yerda Javob: ……………………………… 24.Ikki sonning yig‘indisi 40 ga teng. Agar birinchi sonning qismini ikkinchi sonning ikkilanganidan olib tashlansa, u holda hosil bo‘ladi.
Javob; ……………………………… 25.Ifodani soddalashtiring Javob; ……………………………… Download 142.12 Kb. Do'stlaringiz bilan baham: |
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