2015-yilning variantlari Matematika (Informatika) javoblari bilan

VARIANT № 121
1. A nuqtadan a tekislikka ikkita AB=15 sm, AC=20sm og’ma o’tkazilgan. AC o’g’maning a tekislikdagi proyeksiyasmi toping.
A) 8 B ) 9 C) 12 D) 6
2. tenglamadan x qabul qiladigan qiymatlami toping.
A ) 1 ; B) ±1; ± C) 3; D) -1; -
3. y= funksiyaning aniqlanish sohasiga tegishli butun sonlar yig’indisini toping.
A) 3 B) 4 C) -5 D) -6
4. Biror sonning 25% ko’pi bilan shu sonning 25 % kamida necha foiz ko’p?
A) 66 B) 66 C) 67 D) 65
5. ABCD kvadratning D uchidan A, B tomoning o'rtasida DK kesma tushirildi. AC diognal uni L nuqtada KL=2,5 sm uzunlikdagi kesmaga ajratdi. Kvadratning tomonini toping.
A) 3 B) 4 C) 5 D)
6. . a ning qanday qiymatida tenglamalar sistemasi yechimga ega?
A) 0 B )3 C)1 D) 2
7.
A) - B) C) 1 D) -2
8. Tenglamani yeching:
A) B ) C ) D)
9 ABC to’g’ri burchakli uchburchakda C to’g’ri burchak, BC=15, AC=8 uning B burchagi sinusi va tangenisi nisbatini toping.
A) B) C) D)
10. - ni hisoblang.
A) 32 B ) C) D)
11. sinx=0,1 x tenglama nechta ildizga ega?
A) 10ta B ) 5 ta C) 3ta D) 7ta
12. bo’lsa ko’paytmani hisoblang.
A) 1 B ) -2
C)3 D) 2
13. A(4;6), B (2;1) va C (6;1) nuqtalamitutashtirishdan hosil bo’ladigan uchburchak yuzini toping.
A) 20 B ) 10 C) 8 D) 15
14. ni soddalashtiring.
A) a+b B) ab C) D) a-b
15. Silindrga muntazam uchburchakli prizma ichki chizilgan, prizmaga esa silindr ichki chizilgan bo’lsa, katta silindr hajmi kichik silindr hajmidan necha marta katta bo’ladi?
A) 2 B ) 6 C) 3 D) 4
16. ABC ucburchak O-markazli aylanaga ichki chizilgan. Agar A) 100° B) 60° C ) 50° D) 40°
17. bo’lsa, a ning qiymatini toping.
A) 15 B ) 10 C) 30 D) 6
18. 1,16(6)+0,12(3) ni hisoblang.
A) 19 B ) 1 C ) D ) 1
19. Uchburchakning ikkita tomoni 24 va 11ga. ular orasidagi burchagi 120° ga teng. Shu uchburchakka tashqi chizilgan aylananing radiusini toping.
A) B) C) D)
20. bo’lsa, funksiya uchun f(a)=0 bo’lsa a ni toping.
A) 0 va -5 B ) -5 C) 0 v a 3 D) 0
21. 7¹⁶+4¹⁴ yig’indi qiymatining natural bo'luvchilari sonini toping.
A) 255 B) 100 C) 30 D)900
22. dx ni hisoblang
A) B) C ) D )
23. Muntazam uchburchak ichidan olingan nuqtadan uchburchak tomonlarigacha bo’lganmasofalar mos holda Muntazam uchburchak ichidan olingan nuqtadan uchburchak tomonlarigacha bo'lgan masofalar mos holda . vektorlarning absalyut qiymatlarga teng bo'lsa, uchburchak balandligini toping.
A ) B) 18 C) 16 D)
24. Konus o’q kesiminig perimetri 72 ga, uning balandligi 24 ga teng. Uning hajmini toping.
A) 400 B) 960 C) 800 D) 720
25. tgα+ctgα≥2 tengsizlik qachon o’rinli?
A) B )
C) D) –
26. Tenglamani yeching
A) 2 B) 5 C)3 D) 1
27. Agar tenglamadagi m va n sonlari o’zaro tub natural sonlar bo'lsa, m+n ni toping
A ) 94 B ) 69 C)56 D ) 49
28. Arifmetik progressiyada a₁+a₃+a₅+...+a₉=50, a₂+a₄+a₆+...+a₁₀=75 bo'lsa, d ni toping.
A) 3 B ) 6 C)5 D) 15
29. 144∙49 ko'paytmaning natural bo’luvchilari yig'indisini toping
A) 28302 B) 22971 C) 22981 D) 19871
30. tengsizlikni yeching.
A) (0,1;10) B) ( ) C)(-1/2;0) D)(1;10)
31. Texnik Pvositalarga boshqarish va ma‘lumotlarni qayla ishlashning barch funksiyalari inson ishtirokisiz amalga oshiriladigan axborot tizimlari bu. ..
A) Avtomatlashtirilgan axborot tizimlari B ) Mexanik axborot tizimlari
C) Avtomatik axborot tizimlari D) Qo’llik axborot tizimlari
32. MS Excelcja Al=*25, B3=l44 bo'lsa, “ =KOPEHb(B3)+KOPFHb(B3+A1)” formulaning natijasini aniqlang.
A) 24 B)13 C) 12 D) 25
33. Windovs operatsiyon tizim (sistema) da papka va hujjatlarni vertical ustun shaklida tartiblash Va ularni kichik ikonkalar tarzida kodlash usuli qaysi javobda to’g’ri ko'rsatilgan?
A) Значок B ) Список C) Таблица D) Плитка
34. MS Exsel 2003 dasturining joriy “лист” ida nechta ustun mavjud?
A) 255 B) 254 С) 253 D) 255
35. HTML-hujjatida rasm joylashtirish teg to’g’ri ko’rsatiigan qator aniqlang.
A) B) atributlari, yaratilga vaqti saqlanadi.
A) Klaster B) fayl C) Kontroller D) Katalog