sinf – variant

9 -sinf
2 – variant
1. ning qanday qiymatida tenglamaning ildizi 0 ga teng bo`ladi?
A) -4 B) 4 C) -4 va 4 D)
2. Kasr ko’rinishida tasvirlang:
A) B) C) D)
3. Hisoblang: ( -1)( -4)( -9)…( -144) .
A) B) C) D)
4. Quyidagi sonlar ichidan musbat ratsional sonlarni toping:

A) B)
C) D)
5. Agar va bo`lsa, ni toping.
A) B) -1 C) D)
6. sonining eng katta tub bo`luvchisini toping.
A) B) C) D)
7. Tenglamani yeching:
A) 0,64 B) 64 C) 5 D) 6,4
8. Sonlarni o’sish tartibida yozing:
A) B)
C) D)
9. Ifodani soddalashtiring:
A) B) C) D)
10. Tenglamaning ildizlarini toping:
A) B) C) D)
11. tenglamaning ildizlaridan biri –3 ga teng. Tenglamaning ikkinchi ildizini va koeffitsientni toping.
A) B)
C) D)
12. To’g’ri burchakli uchburchakning yuzi 180 sm². Agar uchburchak katetlarining yig’indisi 39 sm bo’lsa, bu katetlarni toping.
A) 12; 27 B) 18; 21 C) 15; 24 D) 13; 26
13. Rombning o’tmas burchagi uchidan tushirilgan balandligi romb tomonini teng ikkiga bo’ladi. Rombning burchaklarini toping.
A) 60⁰ va 120⁰ B) 40⁰ va 140⁰ C) 80⁰ va 100⁰ D) 70⁰ va 110⁰
14. Qavariq ko`pburchakning diagonallari uning tomonlaridan ikki marta ko`p bo`lsa, uning tomonlari sonini toping.
A) B) C) D)
15. Uchburchakning tomonlari 3:5:6 kabi nisbatda. Agar bu uchburchak tomonlarining o’rtasini kesmalar bilan tutashtirilsa, perimetri 35 sm bo’lgan uchburchak hosil bo’ladi. Berilgan uchburchakning tomonlarini toping.
A) 10 sm; 15 sm; 30 sm B) 16 sm; 20 sm; 35 sm
C) 7,5 sm; 12,5 sm; 15 sm D) 15 sm; 25 sm; 30 sm
16. Qaysi qavariq ko’pburchakning 20 ta diagonali bor?
A) 10 B) 8 C) 12 D) 15
17. Tomonlari 24 sm, 25 sm va 7 sm bo’lgan uchburchakning eng kichik balandligini toping.
A) 6,72 sm B) 67,2 sm C) 16,8 sm D) 15 sm
18. To’g’ri burchakli uchburchakning gipotenuzasi 25 sm, katetlari esa 3:4 kabi nisbatda. Uchburchakning katta katetini toping.
19. Tengsizliklar sistemasini yeching:
20. a ning qanday qiymatlarida  kasrlarning yig’indisi 2 dan kichik bo’ladi?
21. O’zining kvadratidan 100% ga katta bo’lgan a musbat sonni toping.
22. Kasrni qisqartiring:
23. AC va BD – ABCD to’rtburchakning diagonallari va O – ularning kesishish nuqtasi. Agar S_COD=6, S_AOD=12, S_BOC=8 bo’lsa, S_AOB ni toping.
24. Teng yonli trapetsiyaning diagonallari o’zaro perpendikulyar bo’lib, uning yuzi 256 sm² . Trapetsiyaning o’rta chizig’ini toping.
25. AB diametr va AC vatar o’tkazilgan. Agar AC va CB yoylarning gradus o’lchovlari 5:4 kabi nisbatda bo’lsa, BAC burchakni toping.