C -5 d −1 bo’lsa, ni a orqali ifodalang. A

I variant
1. Tenglama ildizlari yig’indisini toping.
A) 4 B) -3 C) -5 D) −1
2. bo’lsa, ni a orqali ifodalang. A) B) С) D)
3. 3ga bo’linmaydigan butun sonning kvadratidan bittaga kam bo’lgan son qaysi songa qoldiqsiz bo’linadi?
A) 2 B) 3 C) 4 D) 6
4. Teng yonli to’g’ri burchakli uchburchakning kichik tomoni ga teng bo’lsa, uchburchakning medianalari kesishgan nuqtadan bissektrissalari kesishgan nuqtasigacha bo’lgan masofani toping.
A) B) C) D)
5. tenglamani yeching. A) 1 B) 2 C) 3 D) 4
6. Balandliklari 6, 7 va 8 bo’lgan uchburchakning turi qanday?
A)o’tmas B)to’g’ri C)o’tkir D) javob yo’q
7. Agar bo’lsa, (2a+b+c) ni toping.
A) 2 B) -1 C) 1 D) -3
8. Tomoni a ga teng bo’lgan ABCD kvadrat berilgan. BC va CD tomonlarda M va N nuqtalar mos ravishda shunday olindiki, bunda BM=3MC, 2NC=ND AMN uchburchakka ichki chizilgan aylana radiusini toping.
A) B) C) D)
9. Trapesiyaning yon tomoni teng uch bo’lakka bo’lindi. Bu nuqtalardan asoslarga parallel kesmalar o’tkazildi. Bu kesmalarning uzunligi 7 va 11 ga teng. Bu kesmalar orasidagi masofa 4ga teng. Trapesiyaning yuzini toping.
A) 108 B) 54 C) 36 D) 72
10. Shunday to’rtta son topingki, ularning birinchi uchtasi geometrik progressiya, oxirgi uchtasi esa arifmetik progressiya tashkil qilsin. Chetki sonlarning yig’indisi 21 ga teng, o’rtadagi sonlarning yig’indisi esa 18 ga teng. Bu shartlarni qanoatlantiruvchi butun to’rtta sondan kattasini toping.
A) 12 B) 18 C) 36 D) 28
11. ABCDEFGH muntazam sakkiz burchakning yuzi 3 ga teng bo’lsa, ABEF to’g’ri to’rtburchakning yuzini toping. A) B) C) D)
12. bo’lsa, y-x ning qaiymati qanday bo’ladi?
A) 6 B) -9 C) -15 D) 20
13. ni hisoblang. A) 1 B) 0,5 C) 2 D) 4
14. 500!=13 m ning eng katta qiymatini toping.