1. (5a − 3b) − (−4b + 7a) ifodani soddalashtiring. A) 2a + b B) −2a + b C) 2a – b D) −2a − b 2

Test 29.11.2020.
1. (5a − 3b) − (−4b + 7a) ifodani soddalashtiring.
A) 2a + b B) −2a + b C) 2a – b D) −2a − b
2. Sayyoh butun yo’lning qismini bosib o’tgach, yo’lning yarmigacha yana 16 km qolgan bo’lsa, butun yo’lning uzunligini toping.
A) 36 B) 42 C) 48 D) 54
3. Teng yonli uchburchakning ikki tomoni 2 va 5 ga teng. Uchburchakning eng kichik medianasi uzunligini toping.
A) B) C) 6,5 D) 13
4. parabola uchining koordinatalarini toping.
A) (−1; 4) B) (1; 4) C) (1; −4) D) (−1;−4)
5. sin2x=cos⁴x−sin⁴x tenglamaning eng kichik musbat yechimini toping.
A) B) C) D)
6. Rasmda ABC uchburchak, uning AD va CE bissektrisalari tasvirlangan. Agar ∠ABC = 108◦ bo‘lsa, ∠ENA burchakni toping.
A) 34^◦ B) 36^◦ C) 28^◦ D) 38^◦
7. Farhod, Anvar va Jahongir birgalikda 57.8 kg uzum yig’ishdi. Anvar Farhodga nisbatan 2.4 kg ko’p, Jahongir esa Farhod bilan Anvarning birgalikdagi yig’ganidan 20.6 kg kam yig’gan. Anvar va Jahongir birgalikda necha kg uzum yig’ishgan?
A) 39.4 B) 36.8 C) 38.8 D) 40.2
8. Qirralari 2 dm, 3 dm va 4 dm bo‘lgan to‘g‘ri burchakli parallelepiped shaklidagi quti ichiga eng ko‘pi bilan qirrasi 7 cm bo‘lgan kublardan nechtasini joylashtirish mumkin?
A) 40 B) 69 C) 42 D) 45
9. Tenglamani yeching:
(3x+1)+(3x+3)+(3x+5)+…+(3x+19)=40
A) -2 B) -1 C) 2 D) -3
10. Agar k<0, b>0 bo’lsa, y=kx+b chiziqli funksiya grafigi qaysi choraklarda yotadi.
A) II, III va IV B) I, III va IV C) I, II va III D) I, II va IV
11. a soni quyidagilardan qaysi biriga teng bo‘lganda a, a + 6 va a + 14 sonlar tub sonlar bo‘ladi?
A) 13 B) 11 C) 19 D) 17
12. Ikki shahar orasidagi masofa 126 km. Bu masofa 1:6000000 masshtabli haritada necha millimetrga teng bo’ladi.
A) 210 B) 21 C) 0.21 D) 2.1
13. tenglama nechta haqiqiy ildizga ega. A) 1 B) 3 C) 4 D) 2
14. Hisoblang: 27·((3^-1)³+(3^-2)³-(3^-3)²)+3
A) 4 B) 5 C) 6 D) 3
15. integralni hisoblang
A) B)
C) D)
16. Agar charxpalak 5 minutda marta aylansa,u 12 minutda necha marta aylanadi?
A) B) 61 C) 57 D) 53
17. 12 ta qatordan iborat bo‘lgan musiqa zalining birinchi qatorida 28 ta o‘rindiq bor. Keyingi har bir qatordagi o‘rindiqlar soni oldingi qatordagidan 4 taga ko‘p. Musiqa zalida jami nechta o‘rindiq bor?
A) 612 B) 576 C) 600 D) 504
18.Agar bo’lsa, f^'(−2)+f(1) ning qiymatini toping.
A) 2 B) −2 C) 4 D) −6
19. funksiyaning nollaridan biri 3 bo’lsa, c ning qiymatini toping.
A) 1 B) 0 C) −5 D) −3
20. Agar a va b ratsional sonlar uchun bo‘lsa, u holda ifodaning qiymatini toping.
A) 13 B) 9 C) 7 D) 27
21. Uchburchakli piramida asosining tomonlari 9; 10 va 12 cm ga teng. Piramidaning barcha yon qirralari asos tekisligi bilan 45^◦ li burchak tashkil etsa, uning hajmini (cm³) toping.
A) 91 B) 72 C) 81 D) 90
22. To‘g‘ri burchakli parallelepipedning qirralari nisbati 2:1:3 kabi. Agar parallelepipedning to‘la sirti 198 dm² ga teng bo‘lsa, uning hajmini (dm³) toping.
A) 154 B) 192 C) 148 D) 162
23. Ikki natural sonning EKUKi va EKUBi mos ravishda 420 va 35 ga teng bo‘lsa, ularning ko‘paytmasi 352 dan necha marta katta?
A) 16 B) 12 C) 15 D) 10
24. 3¹⁰⁵+4⁴⁰⁵ ifodaning oxirgi raqamini toping?
A) 4 B) 7 C) 5 D) 3
25. Konusning yasovchilari o’zaro perpendikulyar. Konus uchidan asosigacha eng qisqa masofa 5sm bo’lsa, konusning hajmini toping.
A) B) C) D)
26. cos2x+5cosx=6 tenglamani [-4π;4π] oraliqdagi yechimlari sonini toping.
A) 3 B) 4 C) 5 D) 6
27. Parallelogram dioganallari va 20 ga teng ular orasidagi burchak bo’lsa, parallelogram perimetrini toping.
A) B)
C) D)
28. funksiyaning maksimum qiymatini toping. A) -8 B) -3 C) -7 D) -9
29. Umumiy hadi bilan berilgan ketma-ketlikning birinchi a ikkinchi hadlari kvadrat tenglama ildizlari bo’ladigan kvadrat tenglama tuzing.
A) B)
C) D)
30. Cheksiz kamayuvchi geometrik progressiyada va hadlari yig’indisi 15 ga, ikkinchi hadi 3 ga teng bo’lsa q₁=?
A) B) C) D)