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 49 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. Teng yonli trapetsiyaning diagonali uni ikkita teng yonli uchburchakka ajratadi. Trapetsiyaning burchaklarini toping. 1. 2. 3. 4. A) 2 B) 3 C) 1 D) 4 2 / 25 2. Abituriyentga 36 ta masala berildi. To‘g‘ri yechilgan har biriga 3 ball beriladi. Noto‘g‘risiga 2 ball chegiriladi. 88 ball to‘plashi uchun o‘quvchi nechta masalani to‘g‘ri yechishi kerak? A) 34 B) 38 C) 32 D) 30 3 / 25 3. ifodani a=4, b=5 bo‘lgandagi qiymatini toping. A) 2 B) 1 C) -1 D) 0 4 / 25 4. Agar x2−8x+20z+4z2+41=0 tenglik o`rinli bo`lsa, xz ni toping. A) -40 B) -10 C) -20 D) -5 5 / 25 5. f(x) funksiyani toping. A) 1/(1-x) B) 1/x C) (1-x)/(1+x) D) (1+x)/(1-x) 6 / 25 6. ax²+bc+c=0 kvadrat tenglama bitta manfiy, bitta musbat ildizga ega bo`lsa, quyidagilardan qaysibiri to`g`ri?(D=b2−4ac) A) 3 B) 2 C) 1 D) 4 7 / 25 7. Agar bo’lsa , x va y sonlarning ko’paytmasini toping. A) -2 B) 6 C) 8 D) -4 8 / 25 8. 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) 135 B) 180 C) 126 D) 145 9 / 25 9. Agar sin x + cos x = 1,04 tenglik o’rinli bo’lsa, x qaysi chorakda joylashgan? A) II B) III C) IV D) I 10 / 25 10. 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) 4 B) 5 C) 2 D) 3 11 / 25 11. Sonlarni o`sish tartibida yozing. A) a B) c C) b D) c 12 / 25 12. Funksiya berilgan. f(f(−1)) ni toping. A) 29 B) 18 C) 15 D) 5 13 / 25 13. 20 dan 250 gacha sonlarichida 4 ga bo`linadigan, lekin 6 ga bo`linmaydigan nechta natural son bor? A) 48 B) 30 C) 33 D) 39 14 / 25 14. 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) 4 C) 9 D) 6 15 / 25 15. x0 soni tenglamani ildizi bo`lsa, x²0 -64 ni toping. A) 20/69 B) -48 C) 8 D) 0 16 / 25 16. Agar arifmetik progressiyada bo`lsa, ayirmani toping. A) 4 B) 2 C) 1 D) 3 17 / 25 17. Agar a-b =|x| + 3 bo’lsa a va b lar uchun to’g’ri munosabatni aniqlang. A) a B) a>b C) a=b+1 D) a ≤ b 18 / 25 18. 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 19 / 25 19. Tenglamalar sistemasi nechta yechimga ega? A) 6 B) 4 C) 1 D) 2 20 / 25 20. 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) 16 D) 36 21 / 25 21. ABC uchburchakning AB tomonidan M va N nuqtalar shunday tanlab olinganki, BN=NM=MA. AC tomonidan K va L nuqtalar shunday tanlab olindiki AK=3KL=1,5LC bo'ldi. SMNLK: SMNLK=? A) 2 B) 3 C) 1 D) 0,5 22 / 25 22. (a2- 9)x = a2+ 2a - 3 tenglama a ningqandayqiymatidacheksizko’pyechimgaega? A) a = 1 B) a ≠1 C) a=2 ; a = -3 D) a=−3 23 / 25 23. Agar f(x) = (a + b − 4)x3+ 2x2+ (b − 3)x +6 juftfunksiyaberilganbo’lsa, f(b) ningqiymatini toping. A) 24 B) 7 C) 20 D) 27 24 / 25 24. Agar biror oyda 5 ta payshanba bo’lsa, shu oyda … bo’la olmaydi. A) 5 ta yakshanba B) 5 ta seshanba C) 5 ta juma D) 5 ta shanba 25 / 25 25. Agar ning qiymatini toping. A) -3 B) 3 C) 2 D) -1 0% Testni qayta ishga tushiring Tomonidan Wordpress Quiz plugin Author: InfoMaster Foydali bo'lsa mamnunmiz