X sinf, Matematika ii-tur i-variant

19) funksiyaning eng katta

qiymatini toping.

A) 1,5 B) C) D) 3

20) Muntazam oltiburchakka tashqi chizilgan

aylananing radiusi bo’lsa ,unga ichki

chizilgan aylananing radiusini toping.

A) B) 1,5 C) 1,2 D)

21) M(x,y) nuqtaning koordinatalari yig’indisi 6ga teng. Bu nuqta va koordinat boshi orasidagi eng qisqa masofa qanchaga teng bo’ladi?

A)2 B)3 C)4,5 D)1,5

22) To’g’ri burchakli uchburchakning katetlari 48 va 14 ga teng. Kichik katetning gipotenuzadagi proyeksiyasini toping.

Javob:____________________________________23) Yig’indisi 38 va 62 sonlarining o’rta arifmetigiga teng bo’lishi uchun 62 ning 60% olinsa, 38 ning necha foizini olish kerak?

Javob:____________________________________24) Uchburchakning burchaklari 45⁰ va 60⁰ ga,

unga tashqi chizilgan aylananing radiusi R ga

teng. Uchburchakning yuzini toping

Javob:____________________________________25) sin 5x tenglamaning ildizlarini ko’rsating.
Javob:____________________________________