8-sinf. Algebra va geometriya. 2015-2016. III chorak monitoringi



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8-sinf.
Algebra va geometriya.
2015-2016.
III chorak monitoringi.

1) Qaysi kvadrat tenglamaning diskriminanti


musbat?
A) -2x²+3x-7=0 B) 9x²-6x+1=0
C) x²-x+9=0 D) 3x²+5x+1=0
2) Qaysi kvadrat tenglamaning diskriminanti 1 ga
teng emas.
A) 6x²-5x+1=0 B) 2x²-3x+1=0
C) x²-3x+2,5=0 D) 2x²+7x+6=0
3) 6(3-x²)=13+5(1-x²) tenglamani yeching.
A) x=0 B) x=6 C) x=-6 D) x1=6, x2=6
4) 10x²-12,1=0 tenglama ildizlari yig’indisini
toping.
A) -1 B) 0 C) 1 D) 2
5) tenglamaning katta ildizini toping.
B) C) D)
6) m ning qanday qiymatida x²-14x+m ifoda
ikkihad ayirmasining kvadrati bo’ladi.
A) 14 B) 7 C) 49 D) 196
7) 7x²-1,4x=0 tenglamaning katta ildizini toping.
A) 1,2 B) 1,4 C) 0,7 D)
8) x²-5x+6=0 kvadrat tenglama koeffitsiyentlari
yig’indisini toping.
A) 1 B) 2 C) -11 D) 11

9) 3(x+1)-x<4 tengsizlikning eng katta butun


yechimini toping.
A) 0 B) -1 C) 1 D) 0,4
10) kasrni qisqartiring.
A) B) x+6 C) D) x+
11) Tenglamani yeching:
A) 5 B) 16 C) 9 D) 17
12) Qaysi tenglik to’g’ri?
B)
C) D)
13) Hisoblang:
A) 0 B) C) D) 3
14) Soddalashtiring:
B) C) 3 D) -2
15) Ifodani soddalashtiring:
A) 0 B) 2 C) -2 D) 2
16) To’g’ri burchakli uchburchakning kateti 1,2 ga,
gipotenuzasi esa 3,7 ga teng. Ikkinchi katetni
toping.
A) 3,4 B) 2,7 C) 3,5 D) 2,9

17) ABCD trapetsiyaning asoslari 12sm va 16 sm


ga, yuzi 70 sm² ga teng. Trapetsiya baland-
ligini toping.
A) 7 B) 8 C) 4 D) 5
18) Diagonallari 20 va 14 ga teng bo’lgan romb
yuzini toping.
A) 280 B) 160 C) 140 D) 200

19) To’g’ri burchakli uchburchakning katetlaridan


biri 9 ga,gipotenuzasi 41 ga teng. Uchburchak
yuzini toping.
A) 180 B) 240 C) 360 D) 160
20) To’g’ri to’rtburchakning tomonlaridan biri
0,7 dm, diagonali 2,5 dm. Shu to’g’ri to’rtbur-
chakning perimetri necha sm ga teng?
A) 5,4 B) 6,4 C) 5,8 D) 6,2
21) Tomonlari 1; 1 va ga teng bo’lgan
uchburchakning katta burchagini toping.
A) 600 B) 900 C) 1200 D) 450
22) Uchburchakning tomonlari 30; 25 va 11 ga
teng. Shu uchburchakning katta balandligini
toping.
A) 24 B) 22 C) 23 D) 25
23) Tomonlari 70 sm, 58 sm va 16 sm gat eng
bo’lgan uchburchakning yuzini toping.
A) 328 sm² B) 340 sm²
C) 336 sm² D) 330 sm²
24) Tomoni 1,2 sm ga teng bo’lgan teng tomonli
uchburchakning yuzi necha sm² ga teng?
A) 0,36 B)
C) 0,4 D)
25) ABCD kvadratning tomoni 2 sm ga teng. Uning
AB tomonida P nuqta shunday belgilanganki
unda, PC=2,5 sm. APCD to’rtburchakning
yuzini toping.
A) 2,25 sm² B) 2,5 sm²
C) 3,5 sm² D) 2,4 sm²
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