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8-sinf Matematika 3-chorak

InfoMaster

Aprel 20, 2021

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8-sinf Matematika 3-chorak

Testni Shirinboyev Temur tayyorladi.

1 / 25

Qavariq n burchak ichki burchaklarning yig`indisi qaysi formula yordamida topiladi?

A) 180(n-2)

B) n-2/n

C) 180(n-2)/n

D) 180(n-3)

2 / 25

Tenglamalar sistemsini yechishning necha xil usuli bor.

A) 2 xil

B) 4 xil

C) 1 xil

D) 3 xil

3 / 25

Funksiyalar qanday usullarda beriladi.

A) formula, jadval

B) sistema, jadval, grafik

C) formula, jadval, grafik

D) formula, jadval, sistema

4 / 25

Quyidagi nuqtalardan qaysi biri y=-2x+5 funsiyaga tegishli emas?

A) (0;5)

B) (-2;9)

C) (1;-3)

D) (3;-1)

5 / 25

Ta'rifni to'ldiring. Tamonlari teng bo'lgan to'g'ri to'rtburchak .... deb ataladi.

A) Romb

B) Kvadrat

C) Trapetsiya

D) Parallelogramm

6 / 25

y=3x funksiyaning x=3 bo`lganda y ning unga mos qiymatni toping.

A) y=3

B) y=6

C) y=9

D) y=1/3

7 / 25

Funksiya y(x)=2x-1 formula bilan berilgan bo'lsa, y(10) ni toping.

A) 19

B) 21

C) 20

D) 3

8 / 25

Funksiya y=x+2 formula bilan berilgan bo'lsa, M(0;2) nuqta shu funksiyaga tegishlimi?

A) tegishli emas

B) tegishli

9 / 25

Qavariq 18 burchakning tomonlari sonini toping.

A) 18

B) 9

C) 20

D) 9

10 / 25

Quyidagi nuqtalardan qaysi biri y=3x+7 funksiyaga tegishli.

A) (2;10)

B) (3;5)

C) (-1;4)

D) (1;11)

11 / 25

Tengsizliklarni hadma-had ko’paytiring: 3,2>3,1 va 3>2

A) 9,6>6,2

B) 9,6>6

C) -9,6<-6,2

D) 9,6>6

12 / 25

1/125 ni o’nli davriy kasr ko’rinishida tasvirlang:

A) 0,5

B) 0,8

C) 0,08

D) 0,008

13 / 25

Tenglamani yeching: x(x-2)=0

A) 0 va 1

B) 0 va 2

C) 0 va -2

D) 2 va -3

14 / 25

Tengsizlikning ikkala qismiga -10 ni qo’shing: 3,35<4,5

A) -6,65<5,5

B) -6<-5

C) -6,65<-5,5

D) 6,65<5,5

15 / 25

(5;10)ni qo’sh tengsizlik ko’rinishida tasvirlang

A) T.J.Y

B) 5>x >10

C) 5<x <10

D) 510

16 / 25

5 : 13 sonini 0,001 gacha aniqlikdagi o’nli kasr ko’rinishida tasvirlang:

A) 0,385

B) 0,538

C) 0,835

D) 0,853

17 / 25

To’g’ri to’rtburchakning yuzi 400 ga,tomonlarining nisbati 4:1 ga teng. Shu to’g’ri to’rtburchakning perimetrini toping

A) 80

B) 200

C) 100

D) 120

18 / 25

Agar kvadratning yuzi 36/49 mm² ga teng bo’lsa, uning tomonini toping?

A) 6/7 sm

B) 7/6 mm

C) 6/8mm

D) 6/7mm

19 / 25

Yuzi 144 sm² , balandliklari 8 sm va 12 sm bo’lgan paraleligramning perimetrini toping.

A) 40 sm

B) 60 sm

C) 46 sm

D) 56 sm

20 / 25

Tengsizlikni yeching:

4(x-1)+5(x+1)<6(x+2)+7(x-1)

A) x>1

B) x<-1

C) x<-6

D) x>-1

21 / 25

Ikki xonali sonning raqamlari yig`indisi 9 ga teng. Shu raqamlar bilan teskari tartibda yozilgan son berilgan sondan 27 ta ortiq. Berilgan sonni toping.

A) 72

B) 20

C) 26

D) 36

22 / 25

Tengsizliklar sistemasini yeching: $\left\{\begin{matrix} 3(1-x)>5-4x& \\ 13+4x<1 && \end{matrix}\right.$

A) x>-3

B) x>-3

C) xϵø

D) x<3

23 / 25

7(1-x)>5(3-x) tengsizlikning yechimi bo`ladigan eng katta butun sonni toping.

A) x=3

B) x=-3

C) x=-5

D) x=5

24 / 25

Tengsizliklar sistemasining yechimi bo`ladigan eng katta butun sonni toping:

A) x=1

B) x=-1

C) x=-2

D) x=3

25 / 25

Kitob va daftar birgalikda 1100 so`m turadi. Kitob narxining 5% i daftar narxining 10% idan 25 so`m qimmat. Kitob va daftar alohida-alohida qancha turadi.

A) 950 so`m, 150 so`m

B) 800 so`m, 300 so`m

C) 750 so`m, 350 so`m

D) 900 so`m, 200 so`m