Uy » Online olimpiada » Matematika olimpiada » 9-sinf Matematika olimpiada №1 Matematika olimpiadaTuman 2020-2021 o'quv yili 9-sinf Matematika olimpiada №1 InfoMaster Avgust 23, 2024 10 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 0 0 123456789101112131415161718192021222324 Vaqtingiz tugadi! 9-sinf Matematika olimpiada №1 2020-2021 o'quv yil tuman bosqichida tushgan savollar 1 / 24 1. Teng yonli trapetsiyaning diagonali uni ikkita teng yonli uchburchakka ajratadi. Trapetsiyaning burchaklarini toping. 1. 2. 3. 4. A) 4 B) 2 C) 3 D) 1 2 / 24 2. Rombning diagonallari 6 va 8 ga teng bo‘lsa, uning tomonini toping. A) 8 B) 3 C) 5 D) 6 3 / 24 3. Agar (3-a)(3-b)(3-c)=(3+a)(3+b)(3+c) bo‘lsa, ni hisoblang. (Bunda ). A) -1/3 B) 1/9 C) 1/27 D) -1/9 4 / 24 4. P(x) ko‘phadni x-a ga bo‘lgandagi qoldiqni toping. A) 0 B) P(x) C) P(x-a) D) P(a) 5 / 24 5. ni hisoblang. A) -2 B) 2 C) 3 D) 4 6 / 24 6. stemadan ni toping. A) 11/7 B) 7/3 C) 3/7 D) 7/11 7 / 24 7. Hisoblang: A) 1 B) 1,5 C) 0,5 D) 5 8 / 24 8. Parallellogrammning 5 ga teng bo‘lgan diagonali uning 12 ga teng bo‘lgan tomoniga perpendikulyar. Parallelogrammning perimetrini toping. A) 48 B) 50 C) 44 D) 34 9 / 24 9. Tenglamani yeching: |x+6|=|x+10| A) 4 B) -6 C) 6 D) -8 10 / 24 10. 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) 30 B) 34 C) 38 D) 32 11 / 24 11. Asoslari 18 va 12 ga teng bo‘lgan teng yonli trapetsiyaning diagonallari o‘zaro perpendikulyar. Trapetsiyaning yuzini toping A) 150 B) 125 C) 225 D) 400 12 / 24 12. Tenglamaning natural sonlardagi yechimida ni toping: A) 2 B) 5 C) 4 D) 3 13 / 24 13. ifodani a=4, b=5 bo‘lgandagi qiymatini toping. A) 0 B) -1 C) 2 D) 1 14 / 24 14. Ifodaning eng kichik qiymatini toping: A) -12 B) 4 C) -4 D) 12 15 / 24 15. Agar bo‘lsa, ko‘paytmani hisoblang. A) 1/33 B) -1 C) 1/35 D) 31/35 16 / 24 16. 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) To‘g‘ri burchakli C) O’tkir burchakli D) Bunday uchburchak yo’q 17 / 24 17. Geometrik progressiyada dastlabki to‘rtta hadlari mos ravishda 6; 24; 96; bo‘lsa, ni toping. A) 15 B) 16 C) 14 D) 22 18 / 24 18. Hovuzga uchta quvur o‘tkazilgan. Birinchisi hovuzni 12 soatda, ikkinchisi 8 soatda to‘ldiradi. Uchinchisi hovuzni 1 sutkada bo‘shatadi. Agar uchala quvur birgalikda ochib qo‘yilsa, bo‘sh hovuzning yarmi qancha vaqt(soat)da to‘ladi? A) 2,5 B) 1,5 C) 3 D) 2 19 / 24 19. To‘g‘ri burchakli uchburchakka ichki chizilgan aylana urinish nuqtasida gipotenuzani 5 va 12 ga teng kesmalarga ajratadi. Uchburchak yuzini toping A) 35 B) 65 C) 60 D) 48 20 / 24 20. bo‘lsa, ifodaning qiymatini toping A) 2/3 B) 13/16 C) 3/16 D) 15/16 21 / 24 21. 600 li burchakka bir-biriga tashqaridan urinuvchi ikkita aylana ichki chizilgan. Kichik aylananing radiusi ga teng. Katta aylananing radiusini toping. A) 3r B) 2r C) 5r D) 4r 22 / 24 22. Agar bo‘lsa, ni hisoblang. A) ±4 B) 3 C) 4 D) -4 23 / 24 23. Tarkibida 85% suv bo‘lgan 0,5 t sellyuloza qorishmasida 75% suv bo‘lgan qorishma olish uchun necha kg suvni bug‘lantirish kerak? A) 400 B) 300 C) 200 D) 100 24 / 24 24. Yuzi 96 sm2, balandliklari 6 sm va 8 sm bo‘lgan parallelogrammning perimetrini toping. A) 56 sm B) 40 sm C) 20 sm D) 50 sm 0% Testni qayta ishga tushiring Tomonidan Wordpress Quiz plugin Author: InfoMaster Foydali bo'lsa mamnunmiz