9-sinf, I – variant k ning shunday qiymatini topingki, y=-x2

9-sinf, I – variant.

1. 
   k ning shunday qiymatini topingki, y=-x² parabola bilan y=kx-6 to`g`ri chiziqning kesisish nuqtalaridan birining absissasi x=2 bo`lsin.
   

1. 
   k=-1 B) k=1 C) k=2 D) k=-2
   

2. 
   parabola qaysi choraklarda joylashgan?
   

1. 
   I, II, III B) II, III, IV C) I, III, IV D) I, II, III, IV
   

3. tengsizlikning barcha butun yechimlari yig`indisini toping?

2. 
   A) 10 B) 9 C) -9 D) -10
   

4. To`g`ri to`rtburchakning diagonali uning bir tomonidan 2 marta uzun. To`g`ri to`rtburchakning diagonallari orasidagi burchakni toping.

3. 
   A) 30^o B) 60^o C) 150^o D) 90^o
   

5. ning qanday qiymatida tengsizlik x ning barcha qiymatlarida o`rinli bo`ladi?

A) B) C) D)

6. Tengsizlikni yeching:

_A) x<0 B) x>0 C) _{D) x<2}

7. Agar bo`lsa ni toping?

A) B) C) D)

8. Teng yonlitrapetsiyaning asoslari 10 sm va 16 sm, yon tomoni esa 5 sm. Trapetsiyaning yuzini toping?

A) 45 sm² B) 50 sm² C) 52 sm² D) 48 sm²

9. Ifodaning son qiymatini toping: bunda

A) 14,4 B) 12 C) 11 D) 1,2

10. Funksiyaning aniqlanish sohasini toping:

A) B) C) D)

11. Agar ABC uchburchakda AB=6sm, BC=12 sm va bo`lsa, uchburchakning A burchagini toping?

A) 45^o B) 90^o C) 60^o D) 30^o

12. Geometrik progressiyada q= bo'lsa, S ni hisoblang?

A)2+ B)3 C) D)2

13. Agar ikki vektorning uzunliklari va ular orasidagi burchak 45^o bo`lsa, va vektorlarning skalyar ko`paytmasini toping?

A) 52 B) 32 C) 2 D) 102

14. ning qanday qiymatlarida giperbola bilan to`g`ri chiziq bitta umumiy nuqtaga ega bo`ladi?

A) 10 B) -9 C) 8 D) 9

15. Sonlarni osish tartibida joylashtiring:

A) B) C) D) 'lsa

16. Radiusi 3 sm bo`lgan aylananing gradus o`lchovi 150^o bo`lgan markaziy burchagi tiralgan yoy uzunligini toping.

A) sm B) sm C) D)

17. bo'lsa sin2a ni hisoblang

A) B) C) D)

18. cosa+sina= bo'lsa ni toping

_____________________________________________________________________________________23._Markaziy_burchagi_140_o_,_yuzi_31,5_sm_2'>___________________________________________________________________________________'>___________________________________________________________________________________

19. Uchburchak burchaklarining nisbati 3:2:1 kabi bo`lsa, uning tomonlari nisbatini toping.

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20. Diametri 6 ga teng doira yuzini toping.

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21. Arifmetik progressiyada , d=5, n ni qiymatini toping

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22. Agar parallelogrammning diagonallari 10 sm va sm ga teng bo`lsa, parallelogrammning tomonlarini toping.

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23. Markaziy burchagi 140^o, yuzi 31,5 sm²bo`lgan doiraviy sektorning radiusini aniqlang.

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24. Perimetri 30 sm bo`lgan parallelogrammning tomonlari2:3 nisbatda. Agar parallelogrammning o`tkir burchagi 30^obo`lsa, uning yuzini toping.

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25.Tengsizlikning barcha butun yechimlari yig`indisini toping:

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