Matematika test 7-sinf (ixtisos) 1-variant

2.Agar bo’lsa, ni toping.
А) –0,5; B) -1; c)ma’nogaegaemas; d) 1.
3. Tenglamani yeching:
А) 0; B)ildiziyo’q; c) ; d) 44.
4. Uchta sexda 1800 ta ishchiishlaydi. Вirinchi sexda ikkinchisiga qaraganda 1,2 martako’p, uchinchisexda esa birinchisidan 100 ta ishchiko’p. Uchinchisexda nechta ishchiishlaydi?
А) 400; B) 500; c) 600; d) 700.
5.Yukmashinasi 2 soat dayengil avtomobil 1 soat da bosibo’tganyo’ldan 20 km ko’pyo’lbosadi. Yengil avtomobilning tezligiyuk mashinasining tezligidan 1,5martako’p. Yuk mashinasiningtezligini toping.
А) 20 km/soat; B) 30 km/soat; c) 40 km/soat; d) 50 km/soat.
6. Tenglamani yeching: .
А) 9; B) 27; c) 243; d) 81.
7. Ko’phadni standart shaklga keltiring:

A) 4x²y – 3,75a²b B) 3x²y – 2a²b C) 3x²y + 10a²b D) 3x²y – 10a²b

8. Agar a = –2, b = bo’lsa, ifodaning qiymatini toping.

A) 10 B) 20 C) –1 D) –10

9. Agar P = 6a² + 4ab – 5b², Q = 2a² – 6ab – 3b² bo’lsa, P – Q ni toping.

A) 4a² –2ab – 8b² B) 4a² –10ab – 8b² C) 4a² +10ab – 2b² D) 4a² +10ab – 8b²

10. Kasrni qisqartiring:

_A) B) C) D)

11. Agar bo‘lsa, nimaga teng?

A) 4,5 B) 6,25 C) 5 D) 4,25

12. Ifodani soddalashtiring:

A) B) C) D)

13. Kasrni qisqartiring:
_A) B) C) D)

14. 50⁵⁰ ni 25²⁵ ga bo‘lsa nima hosil bo‘ladi?

A) 2² С) 2²⁵ С) 25²⁵ D) 100²⁵

15. Tenglamani yeching:

A) 1 С) 2 С) 5 D) 0,2

16.O`ziga qo`shni bo`lgan burchakning 25%i ga teng bo`lgan burchakni toping.

A) 144° B) 30° C) 36° D) 45°

17.Bo`yi 14dm, eni 10dm bo`lgan to`g`ri to`rtburchak shaklidagi tunukadan asosining uzunligi enidan 2 marta katta bo`lgan quti yasash talab qilinadi. Buning uchun tunukaning har bir burchagidan kvadrat kesib olib, qolgan qismini quti ko`rinishida bukish kerak. Quyidagi tenglamalarning qaysi biridan kesib olinadigan kvadratlarning tomonini topish mumkin?
A) 2(14 – x) = 10 – x С) (14 – 2x) = 2(10 – 2x)
С) 14 – 2x = 10 – 2x D) (14 – 2x)(10 – 2x) = 14  10 .
18. ABC uchburchakning A burchagi 50° ga teng bo’lsa, B va C burchaklar bissektrisalari orasidagi burchakni toping.

A ) 75° B) 55° C) 115° D) 130°

19. Agar a║b bo‘lsa, x = ?, y = ?

20. Umumiy tomoni BC bo`lgan ∆ABC va ∆DBC uchburchaklar berilgan. AC BD, AB=AC, BAC= BCD=70° bo`lsa, CBD ni toping?

21. Ifodani soddalashtiring:
22. Hisoblang:
23. Perimetri 44 ga teng bo’lgan uchburchakning bissektrisasi uni perimetrlari 36 va 24 bo’lgan uchburchaklarga ajratadi. Berilgan uchburchakning shu bissektrisasini toping.
24.ВпрямоугольномтреугольникеАВСto’g’riburchakliuchburchakdaСto’g’riburchak, В burchak 27^оgateng, СD – balandlik, СК - АСВburchakningbissektrisasi. DСКburchakni toping.
25.МРК uchburchakning Р burchagi K burchagining 60% initashkilqiladi, burchak М esa P burchakdan 4^о katta. Р burchakni toping.