Uy » Online olimpiada » Matematika olimpiada » 9-sinf Matematika olimpiada №2 Matematika olimpiadaTuman 2019-2020 o'quv yili 9-sinf Matematika olimpiada №2 InfoMaster Avgust 19, 2024 17 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 0 1 12345678910111213141516171819202122232425 Vaqtingiz tugadi! 9-sinf Matematika olimpiada №2 2019-yil tuman bosqichida tushgan savollar 1 / 25 1. ni hisoblang. A) 3 B) 4 C) 2 D) -2 2 / 25 2. P(x) ko‘phadni x-a ga bo‘lgandagi qoldiqni toping. A) 0 B) P(x-a) C) P(x) D) P(a) 3 / 25 3. Parallellogrammning 5 ga teng bo‘lgan diagonali uning 12 ga teng bo‘lgan tomoniga perpendikulyar. Parallelogrammning perimetrini toping. A) 44 B) 48 C) 34 D) 50 4 / 25 4. ABC uchburchakda O nuqta AD medianava BE bissektrisalar kesishishnuqtasi. AOEva BOD uchburchaklar yuzlari mos ravishda 1 va 3 ga teng bo`lsa, EOC uchburchakning yuzini toping. A) 2 B) 3 C) 5 D) 4 5 / 25 5. Hisoblang: cos 10o − 2 cos 50o − cos 70o A) cos40° B) –sin40° C) sin40° D) –cos40° 6 / 25 6. (a2- 9)x = a2+ 2a - 3 tenglama a ningqandayqiymatidacheksizko’pyechimgaega? A) a ≠1 B) a=−3 C) a=2 ; a = -3 D) a = 1 7 / 25 7. Agar f(x) = (a + b − 4)x3+ 2x2+ (b − 3)x +6 juftfunksiyaberilganbo’lsa, f(b) ningqiymatini toping. A) 27 B) 20 C) 24 D) 7 8 / 25 8. ABCD parallelogramda AB=10, AD=16. BC tomonga AE va DF bissektrisalar o`tkazilganbo`lib, ular G nuqtada kesishadi. E va F nuqtalar BC tomonda bo`lsa, AGD va FGE uchgburchaklar yuzalari nisbatini toping. A) 4 B) 64 C) 36 D) 16 9 / 25 9. Funksiya berilgan. f(f(−1)) ni toping. A) 15 B) 29 C) 5 D) 18 10 / 25 10. Agar a-b =|x| + 3 bo’lsa a va b lar uchun to’g’ri munosabatni aniqlang. A) a ≤ b B) a>b C) a D) a=b+1 11 / 25 11. Agar cheksiz kamayuvchi geometrik progressiyaning hadlari yig`indisi ga teng bo`lsa, uning hadlari kublari yig`indisining hadlari kvadratlari yig`indisiga nisbatini toping. A) 3 B) 2 C) 1 D) 4 12 / 25 12. Sonlarni o`sish tartibida yozing. A) b B) a C) c D) c 13 / 25 13. Agar x2−8x+20z+4z2+41=0 tenglik o`rinli bo`lsa, xz ni toping. A) -40 B) -10 C) -5 D) -20 14 / 25 14. Bahodir o`zidagi 411 dona yong`oqni 4 ta bolaga bo`lib berdi. Agar Sanjar va O`ktamning olgan yong`oqlari soni 2 va 3 sonlariga to`g`ri proporsional ,O`ktam va Sohibning yong`oqlari 7 va 5 sonlariga teskari proporsional , Sanjar va G`anisherning yong`oqlari esa 9 va 4 sonlariga teskari proporsional ekanligi ma`lum bo`lsa, G`anisher nechta yong`oq olgan? A) 126 B) 180 C) 145 D) 135 15 / 25 15. Muntazam uchburchakning ichidagi nuqtadan tomonlarigacha bo`lgan masofalar yig`indisi 6 ga teng bo`lsa, uchburchak yuzini toping. A) 12√3 B) 55 C) 99 D) 84 16 / 25 16. Agar arifmetik progressiyada bo`lsa, ayirmani toping. A) 4 B) 2 C) 1 D) 3 17 / 25 17. tengsizlikni yeching. A) (-∞;3)∪(3;∞) B) xℇR C) (-∞;-1/2)∪(-1/2;∞) D) (-∞;-1/2)∪(-1/2;3)∪(3;∞) 18 / 25 18. Birinchi quvurdan ikkinchi quvurga qaraganda ikki barobar ko’p suv oqadi.Ikkalasi birgalikda bo’sh hovuzni 12 soatda to’ldiradi.Birinchi quvur hovuzning uchdan bir qismini necha soatda to’ldiradi? A) 12 B) 9 C) 6 D) 4 19 / 25 19. f(x) funksiyani toping. A) 1/(1-x) B) (1-x)/(1+x) C) (1+x)/(1-x) D) 1/x 20 / 25 20. Tenglamalar sistemasi nechta yechimga ega? A) 4 B) 2 C) 1 D) 6 21 / 25 21. 20 dan 250 gacha sonlarichida 4 ga bo`linadigan, lekin 6 ga bo`linmaydigan nechta natural son bor? A) 39 B) 48 C) 33 D) 30 22 / 25 22. ABCD trapetsiyaning yuzi 36 gateng, asoslari DC=6, AB=2. BC tomonidan E nuqta olingan bo’lib, BE=2EC bo’lsa, ADE uchbutchakning yuzini toping. A) 21 B) 16 C) 12 D) 14 23 / 25 23. Agar bo’lsa , x va y sonlarning ko’paytmasini toping. A) 8 B) -4 C) 6 D) -2 24 / 25 24. Agar biror oyda 5 ta payshanba bo’lsa, shu oyda … bo’la olmaydi. A) 5 ta juma B) 5 ta seshanba C) 5 ta shanba D) 5 ta yakshanba 25 / 25 25. tengsizlikning butun yechimlari yig’indisini toping. A) 10 B) 9 C) 15 D) 7 0% Testni qayta ishga tushiring Tomonidan Wordpress Quiz plugin Author: InfoMaster Foydali bo'lsa mamnunmiz