1. Eskirishi natijasida avtomashina narxi t yildan so’ng V(t)=25000-3000t

10-sinf

1.Eskirishi natijasida avtomashina narxi t yildan so’ng V(t)=25000-3000t

Yevro qonuniyat bilan o’zgaradi.

V(3) qiymatini toping.Bu qiymat ma’nosini tushuntiring

A) 16000€ B) 20000€ C) 35000€ D) 22000€

Yechilishi: V(3) = 25000-3000*3 = 16000

3 yildan so’ng avtomashina narxi 16000€ bo’ladi ) A javob to’g’ri

2.Sisterna 265 l suv bilan to’ldirilgan. Undan har bir minutda 11l suv olinmoqda.

t = 0,1,2,3,4,5 bo’lganda oqib chiqayotgan suvning V L hajmi t(minut) vaqtda qanday bog’liqligni ifodalovchi jadval tuzing.

15 minutdan keyin sisternada qancha suv qoladi?

A) 100L B) 200L C)80L D) 103L

Yechish: V(15) = 265-11*15=265-165=100L A Javob

3.(x,y) juftlik ko’rsatilgan y=a +bx+c kvadrat funksiya bilan ifodalangan munosabatda bo’ladimi?

y=2 -5x-3; (4;9)

A) ha munosabatda bo’ladi;

B) yo’q

C) bo’lishi mumkin

D) to’g’ri javob yo’q

Yechilishi: 9=2*16-5*4*3=32-23=9

A) munosabatda bo’ladi

4.Tenglamani yeching : - =0

A) 1;-0,5 B) 1;-0,2 C) ;-0,4 D) 2;-0,5

Yechish: =0*(x*x+1)

x+1-2 =0

-2 +x+1=0

2 -x-1=0

= = =

= = =1

= = = -0,5

Demak A javob to’g’ri

5.Tenglamani yeching

A) 5 B) 9 C) 7 D) 8

Yechish: ( kvdratga ko’taramiz: 5x+9=49 hosil bo’ladi.

5x = 49-9

5x=40

x=40/5

x=8 Javob D)8

6.Irratsional tenglamani yeching.

A) 0 B) 1 C) 105

=

+9x=6; D=81+4*6=81+24=10;

D) ;

7.Hisoblang

0,04=

A) –2 B) -4 C) 1 D) 2

Yechish: 0.04 =

8.Hisoblang :

A) 3 B)4 C) 0 D) -3

Demak (-3) D javob to’g’ri

9.Taqoslang :

A) C) taqoslab bo’lmaydi D)

Yechish:

Demak B javob to’g’ri

10.Tenglamani yeching

A) 2 B) 4 C) -4 D) 1

Yechish:

x=2

1	2	3	4	5	6	7	8	9	10
A	A	A	A	D	D	A	D	B	A