Uy » Online olimpiada » Matematika olimpiada » 9-sinf Matematika olimpiada №4 Matematika olimpiadaTuman 2022-2023 o'quv yili 9-sinf Matematika olimpiada №4 InfoMaster Avgust 19, 2024 44 Ko'rishlar 2 izohlar SaqlashSaqlanganOlib tashlandi 0 1 123456789101112131415161718192021222324252627282930 Vaqtingiz tugadi! 9-sinf Matematika olimpiada №4 2022-yil 12-oktabr: 2022-2023 o'quv yili tuman bosqichida tushgan savollar! 1 / 30 1. bo‘lsa, ifodaning qiymatini toping A) 13/16 B) 15/16 C) 2/3 D) 3/16 2 / 30 2. Agar x2−8x+20z+4z2+41=0 tenglik o`rinli bo`lsa, xz ni toping. A) -20 B) -10 C) -40 D) -5 3 / 30 3. Teng yonli ABC (AC=BC) uchburchakning AC tomonida D nuqta olingan. K - BD kesma va AH balandlik kesishgan nuqta. Agar AD=AK bo‘lsa, u holda DBA burchakni toping. A) 30° B) 60° C) 75° D) 45° 4 / 30 4. tenglama a parametrning nechta natural qiymatida yechimga ega emas. A) 2ta B) 3ta C) 4ta D) 5ta 5 / 30 5. Tenglama ildizlari yig‘indisini toping. (? − |?|)² + ? + |?| = 100 . A) 45 B) 55 C) 50 D) 40 6 / 30 6. Oila erkak kishi, uning ayoli va talaba qizidan iborat. Agar erkak kishining maoshi 2 barobar oshsa, u holda oila daromadi 67%ga ortadi, agar talaba qizning stipendiyasi 3 barobar kamaysa, oila daromadi 4%ga qisqaradi. Ayolning maoshi oila daromadining necha foizni tashkil qiladi? A) 28 B) 27 C) 26 D) 25 7 / 30 7. Agar AB =12, BC =14, CD = 2 bo’lsa, aylana radiusini aniqlang. A) 8 B) 10 C) 9 D) 11 8 / 30 8. Ikkinchi raqami uchinchi raqamidan 1 ta kam bo‘lgan uch xonali sonlar sonini toping. A) 95 B) 55 C) 81 D) 63 9 / 30 9. Soddalashtiring: A) A B) C C) B D) D 10 / 30 10. Hisoblang: A) -6 B) 5 C) 8 D) 0 11 / 30 11. Uchlari A(2; −3), B(6; 0), C(6; 2) va D(2; 2) nuqtalarda bo‘lgan ABCD to‘rtburchak yuzini toping. A) 18 B) 16 C) 14 D) 12 12 / 30 12. a = 0,12(12), ? = 0,1(21), c = 0,12(11). Agar a+ b+ c= 0, x1x2x3x4... x2021x2022x2023... bo‘lsa, x2022 ni toping (bunda, x1, x2... raqamlar). A) 6 B) 9 C) 2 D) 5 13 / 30 13. Ikkinchi raqami uchinchi raqamidan 4 marta katta, birinchi raqami esa ikkinchi raqamidan 3 ta kam bo‘lgan uch xonali sonlar nechta? A) 2 B) 4 C) 3 D) 1 14 / 30 14. Agar 3x − y = 7 va 5x + 4y = 21 bo‘lsa, 24x + 9y ni hisoblang. A) 90 B) 78 C) 84 D) 69 15 / 30 15. f(x)=ax+b funksiya grafigi A(-1;3) va B(1;7) nuqtalar orqali o‘tadi. f(4- f( -1)) ni toping A) 9 B) 12 C) 7 D) 10 16 / 30 16. Anvar 2 dan boshlab barcha natural sonlarni doskaga yozdi. U yozayotganda to‘la kub bo‘lgan sonlarni qoldirib ketdi (8, 125 kabi). Doskaga 2186-o‘rinda yozilgan sonni toping. A) 2198 B) 2199 C) 2200 D) 2197 17 / 30 17. Chizmadagi uchburchaklar sonini toping. A) 28 B) 30 C) 24 D) 26 18 / 30 18. ABC uchburchakning AE va BF medianalari P nuqtada kesishadi. Agar ABC uchburchak yuzi 36 bo‘lsa, PEСF to‘rtburchak yuzini toping. A) 12 B) 9 C) 18 D) 6 19 / 30 19. Soddalashtiring A) 6 B) 0 C) 9 D) 5 20 / 30 20. Ikki son o’rtasidagi ∆ operatsiyasiga ko‘ra quyidagi natijalar olindi: 12 ∆ 1 operatsiya natijasini toping. A) 125 B) 121 C) 136 D) 132 21 / 30 21. Soddalashtiring: A) C B) D C) A D) B 22 / 30 22. x0 haqiqiy son x³ +1 = (x² − x −1)² − 4 tenglama ildizi bo‘lsa, (x0 − 1)² ni toping. A) 5 B) 3 C) 2 D) 7 23 / 30 23. a parametrning qanday qiymatlarida 9 + 3a, 5 − 2a va 15 − 5a uzunlikdagi kesmalardan uchburchak yashash mumkin? A) (0; 2,5) B) (1/6 ; 1,1) C) (1/3 ; 1,2) D) (1/6 ; 1,5) 24 / 30 24. tengsizlikning (−5; 5) oraliqda nechta butun yechimi mavjud? A) 8 B) 9 C) 10 D) 7 25 / 30 25. Raqamlari yig‘indisi 2 ga teng bo‘lgan o‘n xonali natural sonlar nechta? A) 25 B) 15 C) 9 D) 10 26 / 30 26. Agar ac < 0 bo‘lsa, y=ax-bx²-c funksiya grafigi koordinatalar tekisligining qaysi choraklaridan o‘tadi? A) II, III, IV B) I, III, IV C) I,II,III D) Barcha chorakdan o'tadi? 27 / 30 27. Agar bo'lsa, ning qiymatini toping. A) 0 B) -4 C) 6 D) 5 28 / 30 28. a parametrning qanday qiymatlarida 9 + 3a, 5 − 2a va 15 − 5a uzunlikdagi kesmalardan uchburchak yashash mumkin? A) (1/6 ; 1,1) B) (1/3 ; 1,2) C) (1/6 ; 1,5) D) (0; 2,5) 29 / 30 29. Agar a + b − 2c = 0 bo’lsa, ni hisoblang. A) 0 B) 1 C) 2 D) 3 30 / 30 30. Hisoblang: A) -22/12 B) -4/3 C) -5/4 D) -11/6 0% Tomonidan Wordpress Quiz plugin Author: InfoMaster Foydali bo'lsa mamnunmiz