1. Kasrning maxrajini irratsionallikdan qutqaring. Hisoblang 3

1 . Kasrning maxrajini irratsionallikdan qutqaring.



2.
Hisoblang

3. Agar bo’lsa, u holda a³–30a=y tenglik o’rinli
bo’lib, y butun son bo’lsa, (y+10)²–700 ni hisoblang.
A) 6400 B) 5801 C) 5700 D) 6937
4. Shar radiusi 6 ga teng. Radius uchdan u bilan 300 burchak tashkil
qiluvchi tekislik o’tkazilgan. Shar bilan tekislik hosil qilgan
kesimning yuzini toping.
A) 27π B) 8π C) 64π D) 25π
5. A={3,4,5,6,7,8,9,10,11} va B={5,6,7,8,9,11} (A∩B) ni
hisoblang.
A) {3,4,5,7,8} B) {5,6,7,8,9,11}
C) {5,7,8,10,11} D) {5,6,7,8,11}
6. Ikki shaharlardan bir vaqtning o'zida turli tezlik bilan ikki
avtomabil bir-biriga qarab yo’lga chiqdi. Avtomabillarning har biri
uchrashish joyigacha bo’lgan masofaning yarmini bosib o’tgandan
keyin, haydovchilar tezligini 1,5 barabar oshirdi, natijada avtomobillar
belgilangan muddatdan 1 soat oldin uchrashishdi. Harakat
boshlangandan necha soat keyin avtomabillar uchrashdi?
A) 3 B) 4 C) 5 D) 6
7. Teng yonli trapetsiyada yon tomon va katta asos b ga, kichik
burchak esa α ga teng. Trapetsiyaning yuzini toping.
A) 2b²sinα B) b²sin2α

8. Asoslarining radiuslari 2 va 11 ga teng bo’lgan kesik konus va unga tengdosh silindrning balandliklari ham o’zaro teng bo’lsa, silindr asosining radiusini toping.
A) 8 B) 6 C) 7,5 D) 7
9. ni soddalashtiring.
A) 0 B) 1 C) cosα D) sinα