zadaci_opstinsko_2011

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  • 7/31/2019 zadaci_opstinsko_2011

    1/6

    05.03.2011 - III

    1. 4 a, b, c d, b, c b, da . ( ) ( ):

    a b c dab

    cd

    2. 2009. . (5. 2011. )?

    3. 8.

    4. 2, 5, 7, 13, 16 21 .

    5. 1 , 2 , 5, 10 15 . 7 . 2 , , ?

    20 .

    120 . .

    >> 13 (20 ).

    5. 2 15 + 2 10 + 2 5 + 2 = 62 (10), 2 1 + 2 2 + 2 5 + 10 = 26 (10 ).

    .

    a b c d

    a b c d

    >>

  • 7/31/2019 zadaci_opstinsko_2011

    2/6

    05.03.2011 - IV

    1. 44cm 16cm 16cm. ?

    2. 4, ?

    3. , . , . 210 ?

    4. .

    5. - (). -

    6cm.

    AB = 4cm, BC= 3cm,EF= 5cm, FG = 2cm,

    ABCDEFGHA.

    20 . 120 . .

    25 55

    66 42

    63

    4cm

    3cm

    5cm2cm

    B

    C D

    EF

    GH

    - IV

    1. (XLIII, ML2) 4cm (5 ). 11 4 = 44 (15 ).

    : , , 5 .

    2. 2 ( ) (5 ) 6: 2020, 2011, 2002, 1120, 1111, 1102 (15 ). 2 .: , .

    3. (XLV, ML2) M , 2M (3 ), 3J 6M (3 ). , 6 + = 210 (5 ), 30 (3 ), J 60 (3), 180 (3 ).

    4. (XLIII, ML4) 2 .

    5. ABCDEFGHA

    je:2 (AB + FG + FE + BC) + 6cm = 34cm(20 ).

    .

    5 11 7

    5 25 55 35

    6 30 66 42

    9 45 99 63

    B

    C D

    EF

    GH

  • 7/31/2019 zadaci_opstinsko_2011

    3/6

    05.03.2011.

    V

    1. 1

    2

    2, 100.

    2. . :) 73;) 73;) 273.

    3. a + b = c + d = e + f

    30. a,b, c, d, e f.

    4. a. 2cm, 96cm2 . .

    5. 2011.

    ?

    20 . 120 . .

    - V

    1.2 3 99 1

    98 494 6 198 2

    + + + = = (20 ).

    : 10 .

    2. (XLV, ML2) ) = 36 30, = 143 30 (6 );) = 53 30, = 126 30 (7 ); ) = 87, = 93 (7 ).

    3. 30 : 2, 3, 5, 7, 11, 13, 17, 19, 23, 29 (5 ). 13 + 17 = 11 + 19 = 7 + 23 (15 ).:

    .

    4. 6 96 : 6 = 16cm2 (5 ). - 2cm, 2cm a, 4cm2( ). , 2a + 2a + 4 = 16, a = 3cm (10 ). ,

    P = 6 a2 = 54cm2 (5 ).

    5. (XLV, ML3) .abcd :

    2011

    2011 1000 100 10

    2011 1001 101 11 2

    abcd a b c d

    a b c d a b c d

    a b c d

    = + + + +

    = + + + + + + +

    = + + +

    a = 1. 101b + 11c + 2d = 1010.

    b 9. 11c+ 2d= 101. c 9, d= 1. , 1991. (20 ).: .

    .

    2 2 4

    2

    2

  • 7/31/2019 zadaci_opstinsko_2011

    4/6

    05.03.2011.

    VI

    1. x = 12 + 4,y= 12 : 4,z= 12 4, :

    ) (x + y) (xz), ) ,z x

    x y

    ) .

    :

    x y z

    z x

    +

    2. 6cm, 10cm 8cm. .

    3. a, b p |a b| p = 4022.

    4. 8.

    .

    5. :) , ) 7560, 1.

    20 .

    120 . .

    - VI

    1. (XLV, ML2) x= 8,y= 3, z = 48 (5 ).) 440 (5 ); ) 8 (5 ); ) 4 (5 ).

    2. (XLIII, ML2) 10cm 5cm (10 ).

    , .5

    cm3

    (10 ).

    3. p = 2, 8 ( a {2011, 2011} b {1, 1} a {1, 1} b {2011, 2011}) (10 ).

    p = 2011, 8 ( a {1, 1} b {2, 2} a {2, 2} b {1, 1}) (10 ). 1 .

    4. , (180 8) : 3 = 57 20, 65 20 (10 ). , (180 16) : 3 = 54 40, 6240 (10 ).

    5. 7560 = 2 2 2 3 3 3 5 7 (5 ) ) 75333222 (5 );) 35789 (10 ).

    .

  • 7/31/2019 zadaci_opstinsko_2011

    5/6

    05.03.2011.

    VII

    1. : ) ( )4

    251 3 ;9

    )

    ( )

    4 3

    4

    4 125.

    50

    2. ABCD AC 2cm 5cm. 3cm, ABC ACD.

    3. ( )2

    2 1 7.x + =

    4. .

    5. 4

    ( ). 200cm2 MV.

    20 .

    120 . .

    M

    V

    - VII

    1. (XLV, ML2) ) 9 (10 ); ) 80 (10 ).

    2. (XLIII, ML1) ACD ABC(10 ). DC= 2 2 =

    4cm, AB = 2 5cm = 10cm, 2

    5ACD

    ABC

    P

    P=

    (10 ).

    3. x 2 0, . x 2 (5 ).

    ( )

    2

    2 2,x x = -

    |x 1| = 7 (5 ). x 1 > 0 (5 ), x 2, x 1 = 7, x= 8 (5 ).

    4. .ab 2ab ba c + = 11(a + b) = c2 (5 ). 2 a + b 18, a + b = 11 (5). 29, 38, 47, 56, 65, 74, 83 92 (10 ).

    5. 50cm2, 5cm 10cm (10 ). MV2 = 202 + 102, 10 5cmMV = (10 ).

    .

    M

    V

    A B

    CD

  • 7/31/2019 zadaci_opstinsko_2011

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    05.03.2011 - VIII

    1.

    2010.x x x+ + =

    2. 16 3cm.

    30.

    3. 4 2 . , . .

    4. ( ) 6

    7 ,

    3

    4

    . 7cm .

    5. a, b c, , S

    .| | | | | | | |

    a b c abc S

    a b c abc = + + +

    20 . 120 . .

    - VIII

    1. (XLV, ML2) x 0: x= 670 (10 ). x< 0: x= 2010 (10).

    2. (XLV, ML2) 8 3cmH= (5 ), 12 2cma = (5 ),2(288 384 6 )cmP= + (5 ), 32304 3cmV= (5 ).

    3. () () :, , , , , , , ,, (20 ).: 2 .

    4. r. 2 2 2 21 1

    7 cm cm7 4

    r = (10

    ), 28cm2 (10 ).

    5. x 0 1| |

    x

    x= (4 ). a, b c , abc

    (4 ). S 4 4 (4 ). a, b c , a, b, c abc (4 ) S = 0 (4 ).: S, , 5.

    .

    .