Ii variant Algebra

II variant
Algebra
1. Sonlarga o‘zaro teskari sonlarni mos qo‘ying.
1) ; 2) ; 3) ; 4)
A) ; B) ; C) ; D) ; E) ;

Javob:	1	2	3	4

2. Quyida funksiya grafiklari berilgan. Har bir grafikka mos hollarni toping.

1)	2)		3)		4)		5)
Javob:		A		B		C		D

3. Sportchi 100 m masofaga yugurishni mashq qildi va har safargi ko‘rsatkichlarini sekundlarda yozib bordi. Natijada quyidagi sonlar qatori hosil bo‘ldi:

Hosil bo‘lgan sonlar qatorining medianasi va modasining o‘rta arifmetigini toping.
A) B) C) D)

Javob:

4. va bo‘lsa, ifodaning qiymatini b orqali ifodalang.

Javob: _______________________

5. ning nechta qiymatida k son ham natural bo‘ladi?

A) B) 8 C) 6 D)

Javob:

6. va bo‘lsa,

A) B) C) D)

Javob:

7. ning qanday qiymatlarida tengsizlik ning ixtiyoriy qiymatida bajariladi?
Javob: _______________________

8. Mubina doskaga tengsizlikning butun yechimlarini yozib chiqdi. Aziza esa ularning ichidan tengsizlikning yechimi bo‘ladiganlarini o‘chirdi. tengsizlikning butun yechimlari sonini – tasodifiy miqdorning nisbiy chastotasi qanday o‘zgardi?

Javob: _______________________

9. 7 yigit va 5 qizdan iborat oʻquvchilar guruhidan oltita oʻquvchini shunday tanlab olish kerakki, ularning ichida qizlar soni ikkitadan kam boʻlmasin. Buni necha xil usul bilan amalga oshirish mumkin?

Javob: _______________________

10. , , , sonlardan hech bo‘lmaganida bittasi 6 ga bo‘linadigan – toq sonlar mavjudligini Dirixle prinsipi yordamida isbotlang.

Yechish:_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
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Javob: _______________________

11. Yopiq suv havzasiga suzishga kelgan o‘g‘il va qiz bolalarning soni besh oy davomida qayd qilinib, quyidagi jadval tuzildi:

Suv havzasiga kelgan o‘g‘il bolalar soni – tasodifiy miqdorning chastotasi, nisbiy chastotasini toping va oylar bo‘yicha chastotalar gistogrammasini tuzing.

Oy	Suv havzasiga kelgan bolalar
	O‘g‘il bolalar	Qiz bolalar
Aprel	356	312
May	405	385
Iyun	416	275
Iyul	411	340
Avgust	408	325

Yechish:_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
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Javob: _______________________

12. Tenglamalar sistemasini yeching. Bu yerda,

Yechish:_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
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Javob: _______________________