9-sinf Fizika fani test materiali 1-variant

8-sinf Matematika IIchorak I-variant
1.Ifodaning qiymatini toping.ab³c²,bunda a=-2, b=-1, c=-3;
A)81 B) 18 C)-18 D)24
2.Hisoblang: (0,4)*(-5):2. A)1 B)-1 C)2 D)3
3.Rombning dioganallari bilan tomonlari orasida hosil bo’lgan burchaklarning
nisbati 2:7kabi rombning burchaklarini toping.
A)40⁰;140⁰ B)20⁰;120⁰ C)60⁰;80⁰ D)90⁰_;70⁰
4.Tengsizliklarni qo’shing. 5>-8 va 8>5;
A)-3>-4 B)16>15 C)12>-8 D)13>-3
5.Tasdiqni tengsizlik ko’rinishida yozing.X va 17 sonlarning yig’indisini 18 dan katta.
A)x-18>17 B)x+18>17 C)x>17 D)x+17>18
6.a=2471,05624 sonining 0.01 gacha aniqlikdagi taqribiy qiymatini toping.
A)2471,056 B)2471,06 C) 2471,07 D) 2471,057


7 .T engsizliklar sistemasini yeching; 5x+2>3x-1
3x+1>7x-4


A)-2/3
8.Otasi qizidan 26 yosh katta,4yildan keyin u qizidan 3 marta katta bo’ladi. Otasi necha yoshda, qizi necha yoshda?
A)Otasi 35 yosh,qizi 9 yosh B)Otasi 27 yosh,qizi 8 yosh C)Otasi 35 yosh,qizi 11 yosh D)Otasi 30 yosh,qizi 9 yosh
9.3kg olma va 2kg anor birgalikda 950 so’m turadi. 5kg olmaning puliga 3kg anor olish mumkin. 1kg olma va 1kg anor necha puldan sotiladi.
A)x=150,y=250; B) x=130,y=100; C) x=250,y=100; D)x=100,y=150;
10.Hisoblang: (-55):(-11)*(-3)
A)17 B)15 C)-15 D)18
11.Qarama-qarshi tomonlari teng bo’lmagan shaklning nomini yozing.
Javob:__________________________________________________
12.Tenglamani yeching.(5x-3)(2+3x)=0