8-sinf uchun test 1-variant
1.y=3x chiziqli funksiyada y=12 bo’lsa , x argumentning qiymatini toping.
A) 3/12 B) 36 * C) 4 D) 15 E) 9
2. Chiziqli tenglamani yeching : 0,6x-12=0 .
A) 2 B)11,4 C) -11,4 *D) 20 E) -20
3. Tenglamalar sistemasini yeching:
A) ( ;1) B) ( ;1) C) ( ;1) D) (- ;-1) E) (-1; )
4. Masala: ikki xonali sonning raqamlar yig’indisi 9 ga teng. Shu raqamlar bilan teskari tartibda yozilgan son berilgan sondan 27 ta ortiq. Berilgan sonni toping.
A) 72 * B) 36 C) 45 D) 81 E) to’g’ri javob yo’q.
5. Tengsizliklarni qo’shing: 3x+y<2x+1 va 3y -2x<14x-2
A) x+4y<16y-x B) 3x+y+3y-2x<2x+1+14x-2 C) x+4y<16x-1 D) 2xy<16x-1 E) x+4y>16x-1
6. Tengsizlikni yeching : 5(x-3) + 2x<4x+3.
A) x<6 B) x<-6 C) x>6 D) x>-6 E) x=6
7. Tengsizlikni yeching: |4x-5 | ≤3
A) x≥-2 B) 1/2≤x≤1 C) 1/2≤x≤2 D) -2≤x≤-1/2 E) 0≤x≤2
8. Qo’sh tengsizlikni yeching: -2<10+x< 6
A) -129. Sonni yuzdan birgacha yaxlitlang . Yaxlitlashning nisbiy xatoligini toping:5, 7635
A) 5,76;0,8% B) 5,76;0,9% C) 5,77;0,08% D) 5,76;0,06% E)to’g’ri javob berilmagan
10. Sonni standart shaklda yozing: 0, 00000056
A) 5,6*107 B) 56*108 C)5,6*10-7 D) 56*10-8 E)0,56*107
11. Orasida soni yotga ikkita ketma-ket butun sonni toping.
A) 3;4 B) 4;5 C) 5;6 D) 6;7 E) 7;8
12. Hisoblang : A) 11 B) 121 C) |-121 | D) -11 E) |11 |
13. Tenglamani yeching: 2x2-16=0 A) x= 8 B) x1,2= C) x1,2= D)x= - E) x=16
14. Kvadrat tenglamani yeching: x2+x-6=0
A) x1=-3, x2=2 B) x1=3, x2=-2 C) x1=6, x2=-6 D) x1=-2, x2=-3 E) x1,2=±3.
15. Ildizlari x1=3 , x2=-1 bo’lgan keltirilgan kvadrat tenglamani ko’rsating
A) x2-2x -3=0 B) x2+2x -3=0 C) x2-2x +3=0 D) x2+2x +3=0 E) x2 -3=0
16. Qavariq beshburchakning burchaklari kattaliklari 2:3:4:5:6 kabi nisbatda. Burchaklardan kattasining miqdorini toping. A) 1360 B) 1620 C) 1560 D) 1480 E) 1720
17. Parallelogrammning bir tomoni ikkinchisidan 3 marta uzun bo’lib, perimetri 20 sm bo’lsa, parallelogramm tomonlarining uzunliklarini toping.
A) 3 va 7 B) 6 va 4 C) 1 va 9 D) 2 va 8 E) 2,5 va 7,5
18. Rombning bir burchagi ikkinchisidan 140 kam bo’lsa, shu rombning burchaklarini toping.
A) 1660 va 1940 B) 950va 850 C) 830 va 970 D) 1000 va 800 E) 1100va 700
19. Uchburchakning asosi 5,6 sm ga teng . Uchburchakning o’rta chizig’ini toping.
A) 11,2sm B) 16,8 sm C) 5,6√3sm D) 2,8sm E) to’g’ri javob ko’rsatilmagan
20. Agatr to’g’ri to’rtburchakning tomonlari 4 marta orttirilsa, uning yuzi necha marta ortadi?
A) 4 B) 8 C) 12 D) 16 E) 32
21.To’g’ri burchakli uchburchakning katetlaridan biri 12 sm, gipotenuzasi esa ikkinchi katetdan 6 sm uzun . Gipotenuzaning uzunligini toping. A) 15 B) 25 C) 26 D) 18 E) 32
22. Aylanaga ichki chizilgan ABC burchak 600 ga teng. Agar AB yoy 900 bo’lsa , BC yoyni toping.
A) 1400 B) 1900 C) 1500 D) 1300 E) 1800
23. Aylanani kesuvchi ikki vatari orasidagi burchaklardan biri 800 ga teng. Shu burchakka qo’shni bo’lgan burchaklarning yig’indisini toping.
A) 2000 B) 900 C) 1000 D) 1600 E) 1500
24. va vektorlar berilgan ni toping.
A) (-2;11) B) (0;11) C) (-2; 6) D) (-4;-5) E) (0;-11)
25. vektorlarning skalyar ko’paytmasini toping
A) 1 B) -1 C) -12 D) 11 E) (6;-5)
16>12>4>6>
Do'stlaringiz bilan baham: |