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. Yuzi 96 sm2, balandliklari 6 sm va 8 sm bo‘lgan parallelogrammning perimetrini toping. A) 40 sm B) 50 sm C) 56 sm D) 20 sm 2 / 25 2. ifodani a=4, b=5 bo‘lgandagi qiymatini toping. A) 1 B) -1 C) 2 D) 0 3 / 25 3. Uchburchakning perimetri 24 sm ga teng bo‘lib, uning tomonlari uzunliklari arifmetik progressiya tashkil etadi. Shu uchburchakning kichik tomoni 6 sm bo‘lsa, uchburchak turini aniqlang. A) O’tmas burchakli B) Bunday uchburchak yo’q C) O’tkir burchakli D) To‘g‘ri burchakli 4 / 25 4. Hisoblang: cos 10o − 2 cos 50o − cos 70o A) cos40° B) –cos40° C) sin40° D) –sin40° 5 / 25 5. 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) 9 B) 4 C) 12 D) 6 6 / 25 6. f(x) funksiyani toping. A) (1+x)/(1-x) B) (1-x)/(1+x) C) 1/x D) 1/(1-x) 7 / 25 7. Agar x2−8x+20z+4z2+41=0 tenglik o`rinli bo`lsa, xz ni toping. A) -5 B) -20 C) -40 D) -10 8 / 25 8. 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) 3 D) 2 9 / 25 9. ax²+bc+c=0 kvadrat tenglama bitta manfiy, bitta musbat ildizga ega bo`lsa, quyidagilardan qaysibiri to`g`ri?(D=b2−4ac) A) 1 B) 3 C) 4 D) 2 10 / 25 10. Muntazam uchburchakning ichidagi nuqtadan tomonlarigacha bo`lgan masofalar yig`indisi 6 ga teng bo`lsa, uchburchak yuzini toping. A) 12√3 B) 55 C) 84 D) 99 11 / 25 11. tengsizlikni yeching. A) (-∞;3)∪(3;∞) B) (-∞;-1/2)∪(-1/2;∞) C) (-∞;-1/2)∪(-1/2;3)∪(3;∞) D) xℇR 12 / 25 12. Agar sin x + cos x = 1,04 tenglik o’rinli bo’lsa, x qaysi chorakda joylashgan? A) IV B) II C) III D) I 13 / 25 13. 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) 14 C) 16 D) 12 14 / 25 14. Sonlarni o`sish tartibida yozing. A) b B) a C) c D) c 15 / 25 15. 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) 180 B) 135 C) 145 D) 126 16 / 25 16. Agar bo’lsa , x va y sonlarning ko’paytmasini toping. A) -4 B) 6 C) 8 D) -2 17 / 25 17. Agar f(x) = (a + b − 4)x3+ 2x2+ (b − 3)x +6 juftfunksiyaberilganbo’lsa, f(b) ningqiymatini toping. A) 7 B) 20 C) 24 D) 27 18 / 25 18. 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 D) a=b+1 19 / 25 19. x0 soni tenglamani ildizi bo`lsa, x²0 -64 ni toping. A) 0 B) 8 C) 20/69 D) -48 20 / 25 20. Tenglamalar sistemasi nechta yechimga ega? A) 4 B) 1 C) 2 D) 6 21 / 25 21. 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) 1 C) 4 D) 2 22 / 25 22. 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) 0,5 C) 1 D) 3 23 / 25 23. Funksiya berilgan. f(f(−1)) ni toping. A) 18 B) 29 C) 15 D) 5 24 / 25 24. bo‘lsa, 3? + ? ni toping. A) 10 B) 5 C) 2,5 D) 7,5 25 / 25 25. 1, 2, 3, 4, 5 raqamlaridan foydalanib nechta to‘rt xonali son tuzish mumkin, bunda raqamlar har bir sonda bir martadan ortiq takrorlanmaydi. A) 24 B) 96 C) 60 D) 120 0% Testni qayta ishga tushiring Tomonidan Wordpress Quiz plugin Author: InfoMaster Foydali bo'lsa mamnunmiz