2015-yilning variantlari Matematika (Informatika) javoblari bilan

VARIANT № 119
1.Radiusi R ga teng bo’lgan aylanaga tashqi chizilgan muntazam n-burchakning tomoni b ga teng bo’lsa, shu aylanaga ichki chizilgan muntazam n-burchakning tomonini toping.
A) B) C) D)
2. ni qisqartrrmg.
A ) x¹¹ - 1 B ) C) D)
3. Tenglamani yeching: 4sinxcosx=-l
A) B) C) D)
4. Ikkita shar berilgan bo’lib, ulaming radiuslari 3 dm va 25 sm. Sharlar kesishish chizig uning uzunligi 48 sm bo'lsa, ularning markazlari orasidagi masofani (sm) toping.
A) 12 yoki 20 B ) 11 yoki 24 C) 11 yoki 25 D) 18 yoki 24
5. Agar xy+yz+zx=16 bo’lsa, x²+y²+z² ning eng kichik qiymatini toping.
A) 16 B) 24 C) 32 D) 18
6. tenglamaning barcha ildizlari yig’indisini toping.
A) 2√3 B)√3 C)1 B ) 0
7.
A) 66 B ) 74 C) 46 D ) 72
8. Uchburchakning tomonlari 6; 5 va4 m. 5 m li tomonning 6 m li tomondagi proyeksiyasi necha metr?
A) B) C) D)
9. ni hisoblang.
A) ½ B) 2 C) 4 D) 1
10 Rasmga ko'ra
A) 50° B) 80° C) 70° D) 40°
11. ni hisoblang
A) -3/2 B) -2 C) D) 1/3
12 . tenglamaning idizlari ko’paytmasini toping.
A ) -2 B) 6 C)-4 D) 4
13. 18 dan kichik natural sonlar ichidan eng ko'p natural bo'luvchiga ega bo'lganini toping.
A) 14 B ) 12 C) 16 D) 15
14. x va y sonlar ayirmasining uchlanganini yozing va shu ifodaning x=-0,37, y=-0,42 bo'lgandagi son qiymatini toping.
A ) 0.12 B ) 0,15 C)-0,15 D) -0,79
15 funksiya hosilasining x=1 dagi qiymatini toping.
A) 4(e ln5)^-1 B ) 4(e² ln5)^-1 C) 4(e ln² 5)^-1 D) 4(e ln² 5)^-1
16 Ordinatasi yo=-2 bo'lgan nuqtada y=1-4x+x² egri chiziqqa urinuvchi to’g’ri chiziq tenglamasini ko’rsating.
A) y=2x va y=8-2x B) y=8-2x C) y=-2x va y=2x-8 D) y=2x
17. tenglamaning haqiqiy ildizlari yig'indisini toping.
A) 0 B)1 C) 3 D) 2
18 . ifodani soddalashtiring.
A) B ) 0 C) 1 D )
19. Diognallarining soni tomonlarining soniga teng bo’lgan ko’pburchakning ichki burchaklari yig’indisini toping.
A) 540° B) 180° C) 360° D) 720°
20. 2(x-2)²+2(1-1,5x)=1 tenglama ildizlari yigindisining 2/11 qismini toping.
A ) 2 B ) 11 C)1 D) 1/11
21.Ishchi har kuni kunlik rejada ko’rsatilganidan 25 ta detal ortiq yasab, uch kunda rejadagi 7 kunga mo’ljallanganidan 15 ta ortiq detal yasadi. Ishchi har kuni nechtadan detal yasagan?
A) 47 B) 15 C) 44 D)40
22. Diognallarining soni tomonlarining sonidan 2 marta kam bo’lgan qavariq muntazam ko’pburchakning har bir uchidan bittadan olingan tashqi burchaklari va bitta ichki burchagi yig’indisini toping.
A) 540° B) 360° C) 900 ° D) 450°
23. Yig’indisi 6 ga teng, birinchi 5 ta hadining yig’indisi esa ga teng bo'lgan cheksiz kamayuvchi geometrik progressiyaning uchinchi hadini toping.
A) 0,75 B) 3 C)0,5 D) 1,5
24. 1-2x-x²=2^x+1+2^1-x tenglamani yeching.
A) ∅ B) 1 C) √2-1 D ) 3
25. Nechta butun a va b sonlar jufti a²-b²=-17 tenglikni qanoatlantiradi?
A) 1 B ) 2 C) 0 D) 4
26. va vektorlar orasidagi burchakning radian o’lchovi π/4 ga teng va bo’lsa, shu vektorlarga qurilgan uchburchakning yuzini hisoblang.
A) B ) 3 C) D) 6
27 tengsizlikning [0 ;π] kesmada nechta ildizi bor?
A) 1 ta B ) 4 ta C) 5 ta D) 3 ta
28. Muntazam oltiburchakning tomoni √108 sm bo'lsa, unga tashqi va ichki chizilgan aylana radiuslarining nisbatini toping.
A) B) C) D)
29. |2-x| +3x≤ 5 Tengsizlikni yeching.
A) x≤ -1 B) x≥3 C) x≤ 1,5 D) x≥2
30. sistemani yeching
A) B)
C) D)
31.2 Mbayt necha baytga teng?
A) 2¹¹ bayt B ) 2²⁰ bayt C) 2 ²¹ bayt D )2¹⁰ bayt
_32. A=” Printer -axborotni kiritish qurilmasi” B= ” 101b=Bi,” C=” 1 Gbayt =1024 Mbayt" mulohazalar qiymati asosida quyidagi mantiqiy ifoda qiymatini aniqlang::
A) Rost B) Yolg'on. C) Mantiqiy ifoda xato yozilgan D)Sodda mulohazalardan bazilarini qiymatini aniqlab bo'lmaydi
33. ... disklar va kompyuterga ulangan boshqa qurilmalami ko’rish. shuningdek. ular bilan ishlash imkonini beruvchi dastur oynasini ochadi.
A) Мой комютер (Mening kompyuterim) B) Мои документы (Mening hujjatlarim )
C) Корзина (Savatcha) D) Сетевой окуржение (Tarmoq muxiti)
34. MS Exsel 2003 dasturida yozilgan quyidagi funksiyaning qiymatini toping =CP3HAЧ (31;10;12;4)
A) 16 B ) 14 C )12 D) 15
35. Qaysi dastur yordamida taqdimot slaydlari yaratiladi?
A) Paint B) Photoshop C) Power Point D) Paskal
36. … -fayl sistemasi tomonidan hosil qilingan diskdagi maxsus joy bo’lib, unda fayl nomi. uning hajmi. atributlari. yaratilga vaqti saqlanadi.
A) Klaster B) fayl C) Controller D) Katalog