7-sinf Matematika 2-chorak

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OMAD YOR BO'LSIN!


7-sinf Matematika 2-chorak

Testni Mamadoliyev Diyorbek tayyorladi.

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Birhadning son qiymatini toping:  bunda y=-15,    x=6

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Hisoblang:

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To`g`ri chiziqning ixtiyoriy nuqtasidan unga nechta perpendikulyar to`g`ri chiziq o`tkazish mumkin ?

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Ifodani soddalashtiring:

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n ning qanday qiymatida tenglik to`g`ri bo`ladi:

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Hisoblang:

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Hisoblang:

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To`g`ri chiziqning ixtiyoriy nuqtasidan unga nechta perpendikulyar to`g`ri chiziq o`tkazish mumkin ?

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Teng yonli uchburchakning perimetri 48, yon tomoni 18 ga teng. Uning asosini toping

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Uchburchakning bir uchidan shu uchining qarshisidagi tomonga tushirilgan perpendikulyar nima deb ataladi

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Algebraik ifodaning qiymatini toping:, bunda a = 10, b = -5

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Teng yonli uchburchakning asosi yon tomonidan 3 birlikka kam, perimetri 36 ga teng bo`lsa uchburchakning yon tomonini toping.

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Algebraik ifodaning qiymatini toping:
bunda  a= 2   b=5

 

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Ikki to`g`ri chiziqning kesishishidan hosil bo`lgan burchaklardan uchtasining yig`indisi 250 gradus ga teng. Burchaklardan kichigini toping.

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Tenglamani yeching: 12x - 48 = 5x +1.

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Tenglik shaklida yozing: a va b sonlari yig`indisining ikkilangani ularning ko`paytmasiga teng.

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Teng yonli uchburchakning asosining uzunligi a ga teng bo`lib, u yon tomonlaridan 5 ga ortiq. Shu uchburchakning perimetrini hisoblash uchun ifoda tuzing.

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Burchak bissektrisasi uning tomoni bilan 41°li burchak hosil qiladi. Berilgan burchakni toping.

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a sonni shunday tanlangki, 3x - 4 = a - 2x tenglama x = 1 ildizga ega bo`lsin

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Tenglamani yeching: 0,04x = 4

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Agar bo`lsa,          BC ni toping. ?

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Bo`yi enidan 3 marta katta bo`lgan to`g`ri to`rtburchakning perimetri 120 sm ga teng. Shu to`g`ri to`rtburchakning bo`yini toping.

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Algebraik ifodaning son qiymatini hisoblang: bunda,

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Tenglamani yeching:

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Yig`indisi 84 ga teng bo`lgan ikkita ketma-ket toq sondan kichigini toping.

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