Algebra viii-sinf. I-chorak test. A-variant

Algebra VIII-sinf.IV-chorak test.B-variant

1. 
   Sonning aniq qiymati 1,387, taqribiy qiymati 1,38 bo’lsa,yaqinlashish xatoligini toping: #1 0,003 #2 0,007 #3 1,005 #4 - 0,007 #5 0,002
   
2. 
   Sonning aniq qiymati , taqribiy qiymati bo’lsa,yaqinlashish xatoligini toping:
   

#1

3. 
   Sonning aniq qiymati , taqribiy qiymati bo’lsa,yaqinlashish absolyut xatoligini toping: #1
   
4. 
   Qo’sh tengsizlik ko’rinishida yozing: a= -1,8  0,5
   

#1 -2a  1,5 #3 -2,2  a  1,4 #4 -2,3  a  1,3 #5 -2,4

5. 
   Qo’sh tengsizlik ko’rinishida yozing: a=2,91  0,01
   

#1 2,7 a 2,72 #2 2,6
#3 2,9 #4 2,2  a  2,22

#5 1,99 a

6. ni 0,01 gacha aniqlikda o’nli kasr ko’rinishida yozing:

#1 0,13 #2 0,32 #3 0,42 #4 0,47 #5 0,53

7. ni 0,001 gacha aniqlikda o’nli kasr ko’rinishida yozing:

#1 0,357 #2 0,214 #3 0,643 #4 0,308 #5 0,185

8. ni 0,001 gacha aniqlikda o’nli kasr ko’rinishida yozing:

#1 0,357 #2 0,214 #3 0,643 #4 0,308 #5 0,185

9. 
   Xonaning uzunligi (5  0,04) m ga teng.O’lchashning nisbiy xatoligini aniqlang: #1 4% #2 5% #3 2% #4 8% #5 1,25%
   
10. 
    Ikki qishloq orasidagi masofa (100  3)km ga teng. O’lchashning nisbiy xatoligini aniqlang: #1 1% #2 2% #3 3% #4 4% #5 5%
    
11. 
    Sonni yuzdan birgacha yaxlitlang.Yaxlitlashning nisbiy xatoligini toping: 4,4635
    

#1 5,76; 0,061% #2 4,46; 0,078% #3 3,71; 0,094% #4 2,16; 0,139% #5 2,29; 0,179%

9. 
   Sonni o’ndan birgacha yaxlitlang.Yaxlitlashning nisbiy xatoligini toping: 2,2941 #1 2,3; 2,6% #2 2,2; 2,5% #3 2,3; 0,3% #4 2,3; 0,4% #5 2,3; 0,26%
   
10. 
    Kvadrat tenglamani yeching: 12x²+7x+1=0
    

^{#1 x}1^{= #2 x}1^{= - #3 x}1^{= #4 x= #5 x=}

9. 
   Tenglamalar sistemasini yeching: x+y=4
   

x²-y²= 8

#1 x= 2, y= -2 #2 x=5, y= -1 #3 x= 4, y=0 #4 x=1, y= 3 #5 x=3, y=1

9. 
   Ikki sonning ayirmasi 3 ga , ularning ko’paytmasi 28 ga teng.Shu sonlar yig’indisini toping. #1 13 #2 4 #3 7 #4 11 #5 65
   
10. 
    To’g’ri to’rtburchakning perimetri 30 m ga, yuzi esa 54 m² ga teng .Uning enini toping. #1 5 #2 6 #3 3 #4 8 #5 1
    
11. 
    Tenglamani yeching: x²=11
    

#1 x= #2 x= #3 x=0, x= -5 #4 x=0, x=8 #5 x=0, x= 12

9. 
   Tenglamani yeching: 1,5x-4x²=6,3x-x²
   

^{#1 y= #2 x=0, x= 9 #3 x=0 , x= -10 #4 y=0, y=9 #5 x=0, x= -1,6}

9. 
   Tenglamani yeching:
   
10. 
    Tenglamani yeching: 2x²+3x-2=0
    

9. 
   Tenglamani yeching: 20+8x-x²=0
   

9. 
   Tenglamani ildizi nechta: (x-3)(x-2)=7x-1
   

9. 
   Tenglamani yeching:
   
10. 
    Tenglamani yeching: x²+18x-208=0
    

9. 
   Bir maydondan 450 t, yuzi undan 5 ga kam bo’lgan ikkinchi maydondan 400 t kartoshka yig’ishtirib olindi. Agar ikkinchi maydondagi hosildorlik birinchi maydondagiga qaraganda 2 tonna yuqori bo’lgan bo’lsa, har qaysi maydonning hosildorligini aniqlang.