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 17 Ko'rishlar 2 izohlar SaqlashSaqlanganOlib tashlandi 0 0 123456789101112131415161718192021222324252627282930 Vaqtingiz tugadi! 9-sinf Matematika olimpiada №4 2022-yil 12-oktabr: 2022-2023 o'quv yili tuman bosqichida tushgan savollar! 1 / 30 1. stemadan ni toping. A) 7/11 B) 11/7 C) 7/3 D) 3/7 2 / 30 2. (a2- 9)x = a2+ 2a - 3 tenglama a ningqandayqiymatidacheksizko’pyechimgaega? A) a=2 ; a = -3 B) a ≠1 C) a = 1 D) a=−3 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) 75° C) 60° D) 45° 4 / 30 4. Agar ifoda to‘la kvadrat bo‘lsa, m ning eng katta butun qiymatini toping. A) 1001 B) 100000 C) 10000 D) 1998 5 / 30 5. Teng yonli trapetsiyaning asoslari 6 va 10 ga, diagonali 10 ga teng. Trapetsiya yuzini toping. A) 48 B) 36 C) 56 D) 64 6 / 30 6. Agar 3x − y = 7 va 5x + 4y = 21 bo‘lsa, 24x + 9y ni hisoblang. A) 90 B) 69 C) 78 D) 84 7 / 30 7. Hisoblang: A) -11/6 B) -22/12 C) -5/4 D) -4/3 8 / 30 8. Soddalashtiring: A) A B) B C) C D) D 9 / 30 9. 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) 25 D) 26 10 / 30 10. ABCD to‘rtburchakda: AB=CD, BC= AD. Agar A burchak B burchakdan 4 marta katta bo‘lsa, to‘rtburchakning A burchagini toping. A) 124° B) 148° C) 144° D) 132° 11 / 30 11. Chizmadagi uchburchaklar sonini toping. A) 28 B) 24 C) 30 D) 26 12 / 30 12. 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) 10 C) 7 D) 12 13 / 30 13. Soddalashtiring A) 0 B) 6 C) 5 D) 9 14 / 30 14. Soddalashtiring: A) B B) C C) D D) A 15 / 30 15. x0 haqiqiy son x³ +1 = (x² − x −1)² − 4 tenglama ildizi bo‘lsa, (x0 − 1)² ni toping. A) 7 B) 2 C) 3 D) 5 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) 2200 C) 2197 D) 2199 17 / 30 17. Soddalashtiring: A) C B) D C) B D) A 18 / 30 18. tengsizlikning (−5; 5) oraliqda nechta butun yechimi mavjud? A) 9 B) 8 C) 7 D) 10 19 / 30 19. 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) 9 B) 5 C) 6 D) 2 20 / 30 20. Chizmada ∠AOD = 120∘, ∠BOD = 3∠AOB ?a ∠AOC = 2∠COD bo‘lsa, ∠BOC burchak nimaga teng? A) 60° B) 30° C) 50° D) 45° 21 / 30 21. Agar ac < 0 bo‘lsa, y=ax-bx²-c funksiya grafigi koordinatalar tekisligining qaysi choraklaridan o‘tadi? A) II, III, IV B) Barcha chorakdan o'tadi? C) I,II,III D) I, III, IV 22 / 30 22. Uchlari A(2; −3), B(6; 0), C(6; 2) va D(2; 2) nuqtalarda bo‘lgan ABCD to‘rtburchak yuzini toping. A) 14 B) 12 C) 16 D) 18 23 / 30 23. Soat strelkasi 5 soat vaqt o‘tgandan keyin qanday burchakka buriladi? A) 120° B) 160° C) 150° D) 100° 24 / 30 24. Agar a + b − 2c = 0 bo’lsa, ni hisoblang. A) 0 B) 2 C) 3 D) 1 25 / 30 25. Ikki son o’rtasidagi ∆ operatsiyasiga ko‘ra quyidagi natijalar olindi: 12 ∆ 1 operatsiya natijasini toping. A) 121 B) 125 C) 132 D) 136 26 / 30 26. −16 ≤ 2(y − 7) ≤ 0 va −7 ≤ x ≤ 8 bo‘lsa, x² − y² ifodaning eng kichik qiymatini toping. A) 3 B) 0 C) 2 D) 1 27 / 30 27. Ikkinchi raqami uchinchi raqamidan 1 ta kam bo‘lgan uch xonali sonlar sonini toping. A) 63 B) 95 C) 81 D) 55 28 / 30 28. Hisoblang: A) 0 B) -6 C) 8 D) 5 29 / 30 29. a parametrning qanday qiymatlarida 9 + 3a, 5 − 2a va 15 − 5a uzunlikdagi kesmalardan uchburchak yashash mumkin? A) (0; 2,5) B) (1/6 ; 1,5) C) (1/3 ; 1,2) D) (1/6 ; 1,1) 30 / 30 30. Tenglamani yeching: A) 29/220 B) 10/11 C) Ø D) 0 0% Tomonidan Wordpress Quiz plugin Author: InfoMaster Foydali bo'lsa mamnunmiz