初三数学卷子_初三数学期末考试题

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一、选择题（本大题共10小题，每小题4分，共40分．在每小题给出的四个选项中，只有一个选项是符合题目要求的）

1．在平面直角坐标系中，将抛物线y=x2﹣4先向右平移两个单位，再向上平移两个单位，得到的抛物线的解析式是（）

A．y=（x+2）2+2B．y=（x﹣2）2﹣2C．y=（x﹣2）2+2D．y=（x+2）2﹣2

100道数学方程题(计算)

5X-5=23

6+1/4x=24

45-9x=18

17-11x=23/2

3+3x=15

3/7x-15=6

2/3x+13=17

22+4/3x=34

64-7x=15

3x+3/5=3

3X+5X=48

14X-8X=12

6*5+2X=44

20X-50=50

28+6X=88

32-22X=10

24-3X=3

X+3=18

X-6=12

56-2X=20

4y+2=6

x+32=76

3x+6=18

16+8x=40

2x-8=8

4x-3*9=29

x-6*5=42

x+5=7

2x+3=10

12x-9x=9

6x+18=48

56x-50x=30

5x=15

78-5x=28

32y-29=3

5x+5=15

89x-9=80

100-20x=20

55x-25x=60

76y-75=1

23y-23=23

4x-20=0

80y+20=100

53x-90=16

2x+9x=11 1

2y-12=24

80+5x=100

7x-8=6

65x+35=100

5x+3y=8,3x+5y=8

6x-7y=5,x+2y=4

10x-8y=14,x+y=5

4x+7y=3,x+y=0

3x+y=10,7x-y=20

44x+10y=27,x+y=1

8x-y=0,x+y=18

11x-y=12,11y-x=-12

5x+6y=27,2x+3y=12

7x-2y=4,x+2y=12

(2x+y)-5y=2,2x-5y=0

7x-3y=3,3x+2y=21

7x+2y=21,y-6x=1

10x-8y=0,3x-2y=2

3x+y=10,5x-7y=8

追加点分吧 一共三种三题就够了吧。做100道太自残了。

数学九年级计算题带答案

（1）(X/4)^2+[(56-X)/4]^2=100

两边乘16

x^2+(56-x)^2=1600

化简

x^2+56^2+x^2-112x=1600

2x^2+3136-112x=1600

两边除2

x^2-56x+768=0

因式分解

(x-32)(x-24)=0

于是x=32或x=24

（2）（x/4)^2+[(56-x)/4]^2=196

x^2+(56-x)^2=196*16

x^2+3136-112x+x^2=3136

2x^2-112x=0

x(x-56)=0

x1=0

x2=56

（3）(X/4)^2+[(56-X)/4]^2=200

x^2/16+(56-x)^2/16=200

x^2+(56-x)^2=3200

x^2+3136-112x+x^2=3200

2x^2-112x-64=0

x^2-56x-32=0

判别式=56^2+4*32=3264

x=(56±8√51)/2=28±4√51

x=-0.5657,x=56.5657

（4）3t^2+10t-200=0;

(t+10)(3t-20)=0;

t= -10 或 20/3

（5）原式=92x60-120X-92X+2X^=5310

2X^-212X+210=0

X^-106X+105=0

(X-105)(X-1)=0

（6）x^2+(x+1)^2=7^2

2x^2+2x-48=0

x^2+x-24=0

x=(-1±√97)/2

（7）(1000-2x)(100+x)=100(1+15.2%)*1000

-2x^2+800x+100000=115200

2x^2-800x+15200=0

x^2-400x+7600=0

(x-20)(x-380)=0

x1=20,x2=380

最佳答案给我！！！！！！！！！！！！！！！！！！！！！！！

初三50道计算题及答案

1)x^2-9x+8=0 答案：x1=8 x2=1

(2)x^2+6x-27=0 答案：x1=3 x2=-9

(3)x^2-2x-80=0 答案：x1=-8 x2=10

(4)x^2+10x-200=0 答案：x1=-20 x2=10

(5)x^2-20x+96=0 答案：x1=12 x2=8

(6)x^2+23x+76=0 答案：x1=-19 x2=-4

(7)x^2-25x+154=0 答案：x1=14 x2=11

(8)x^2-12x-108=0 答案：x1=-6 x2=18

(9)x^2+4x-252=0 答案：x1=14 x2=-18

(10)x^2-11x-102=0 答案：x1=17 x2=-6

(11)x^2+15x-54=0 答案：x1=-18 x2=3

(12)x^2+11x+18=0 答案：x1=-2 x2=-9

(13)x^2-9x+20=0 答案：x1=4 x2=5

(14)x^2+19x+90=0 答案：x1=-10 x2=-9

(15)x^2-25x+156=0 答案：x1=13 x2=12

(16)x^2-22x+57=0 答案：x1=3 x2=19

(17)x^2-5x-176=0 答案：x1=16 x2=-11

(18)x^2-26x+133=0 答案：x1=7 x2=19

(19)x^2+10x-11=0 答案：x1=-11 x2=1

(20)x^2-3x-304=0 答案：x1=-16 x2=19

(21)x^2+13x-140=0 答案：x1=7 x2=-20

(22)x^2+13x-48=0 答案：x1=3 x2=-16

(23)x^2+5x-176=0 答案：x1=-16 x2=11

(24)x^2+28x+171=0 答案：x1=-9 x2=-19

(25)x^2+14x+45=0 答案：x1=-9 x2=-5

(26)x^2-9x-136=0 答案：x1=-8 x2=17

(27)x^2-15x-76=0 答案：x1=19 x2=-4

(28)x^2+23x+126=0 答案：x1=-9 x2=-14

(29)x^2+9x-70=0 答案：x1=-14 x2=5

(30)x^2-1x-56=0 答案：x1=8 x2=-7

(31)x^2+7x-60=0 答案：x1=5 x2=-12

(32)x^2+10x-39=0 答案：x1=-13 x2=3

(33)x^2+19x+34=0 答案：x1=-17 x2=-2

(34)x^2-6x-160=0 答案：x1=16 x2=-10

(35)x^2-6x-55=0 答案：x1=11 x2=-5

(36)x^2-7x-144=0 答案：x1=-9 x2=16

(37)x^2+20x+51=0 答案：x1=-3 x2=-17

(38)x^2-9x+14=0 答案：x1=2 x2=7

(39)x^2-29x+208=0 答案：x1=16 x2=13

(40)x^2+19x-20=0 答案：x1=-20 x2=1

(41)x^2-13x-48=0 答案：x1=16 x2=-3

(42)x^2+10x+24=0 答案：x1=-6 x2=-4

(43)x^2+28x+180=0 答案：x1=-10 x2=-18

(44)x^2-8x-209=0 答案：x1=-11 x2=19

(45)x^2+23x+90=0 答案：x1=-18 x2=-5

(46)x^2+7x+6=0 答案：x1=-6 x2=-1

(47)x^2+16x+28=0 答案：x1=-14 x2=-2

(48)x^2+5x-50=0 答案：x1=-10 x2=5

(49)x^2+13x-14=0 答案：x1=1 x2=-14

(50)x^2-23x+102=0 答案：x1=17 x2=6

(51)x^2+5x-176=0 答案：x1=-16 x2=11

(52)x^2-8x-20=0 答案：x1=-2 x2=10

(53)x^2-16x+39=0 答案：x1=3 x2=13

(54)x^2+32x+240=0 答案：x1=-20 x2=-12

(55)x^2+34x+288=0 答案：x1=-18 x2=-16

(56)x^2+22x+105=0 答案：x1=-7 x2=-15

(57)x^2+19x-20=0 答案：x1=-20 x2=1

(58)x^2-7x+6=0 答案：x1=6 x2=1

(59)x^2+4x-221=0 答案：x1=13 x2=-17

(60)x^2+6x-91=0 答案：x1=-13 x2=7

(61)x^2+8x+12=0 答案：x1=-2 x2=-6

(62)x^2+7x-120=0 答案：x1=-15 x2=8

(63)x^2-18x+17=0 答案：x1=17 x2=1

(64)x^2+7x-170=0 答案：x1=-17 x2=10

(65)x^2+6x+8=0 答案：x1=-4 x2=-2

(66)x^2+13x+12=0 答案：x1=-1 x2=-12

(67)x^2+24x+119=0 答案：x1=-7 x2=-17

(68)x^2+11x-42=0 答案：x1=3 x2=-14

(69)x^20x-289=0 答案：x1=17 x2=-17

(70)x^2+13x+30=0 答案：x1=-3 x2=-10

(71)x^2-24x+140=0 答案：x1=14 x2=10

(72)x^2+4x-60=0 答案：x1=-10 x2=6

(73)x^2+27x+170=0 答案：x1=-10 x2=-17

(74)x^2+27x+152=0 答案：x1=-19 x2=-8

(75)x^2-2x-99=0 答案：x1=11 x2=-9

(76)x^2+12x+11=0 答案：x1=-11 x2=-1

(77)x^2+17x+70=0 答案：x1=-10 x2=-7

(78)x^2+20x+19=0 答案：x1=-19 x2=-1

(79)x^2-2x-168=0 答案：x1=-12 x2=14

(80)x^2-13x+30=0 答案：x1=3 x2=10

(81)x^2-10x-119=0 答案：x1=17 x2=-7

(82)x^2+16x-17=0 答案：x1=1 x2=-17

(83)x^2-1x-20=0 答案：x1=5 x2=-4

(84)x^2-2x-288=0 答案：x1=18 x2=-16

(85)x^2-20x+64=0 答案：x1=16 x2=4

(86)x^2+22x+105=0 答案：x1=-7 x2=-15

(87)x^2+13x+12=0 答案：x1=-1 x2=-12

(88)x^2-4x-285=0 答案：x1=19 x2=-15

(89)x^2+26x+133=0 答案：x1=-19 x2=-7

(90)x^2-17x+16=0 答案：x1=1 x2=16

(91)x^2+3x-4=0 答案：x1=1 x2=-4

(92)x^2-14x+48=0 答案：x1=6 x2=8

(93)x^2-12x-133=0 答案：x1=19 x2=-7

(94)x^2+5x+4=0 答案：x1=-1 x2=-4

(95)x^2+6x-91=0 答案：x1=7 x2=-13

(96)x^2+3x-4=0 答案：x1=-4 x2=1

(97)x^2-13x+12=0 答案：x1=12 x2=1

(98)x^2+7x-44=0 答案：x1=-11 x2=4

(99)x^2-6x-7=0 答案：x1=-1 x2=7

(100)x^2-9x-90=0 答案：x1=15 x2=-6

初一数学60道计算题

初一数学计算题400道，附加答案。十万火急！~~~~~~~~

(一)计算题:

(1)23+(-73)

(2)(-84)+(-49)

(3)7+(-2.04)

(4)4.23+(-7.57)

(5)(-7/3)+(-7/6)

(6)9/4+(-3/2)

(7)3.75+(2.25)+5/4

(8)-3.75+(+5/4)+(-1.5)

(9)(-17/4)+(-10/3)+(+13/3)+(11/3)

(10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)

(11)(+1.3)-(+17/7)

(12)(-2)-(+2/3)

(13)|(-7.2)-(-6.3)+(1.1)|

(14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)

(15)(-2/199)*(-7/6-3/2+8/3)

(16)4a)*(-3b)*(5c)*1/6

1. 3/7 × 49/9 - 4/3

2. 8/9 × 15/36 + 1/27

3. 12× 5/6 – 2/9 ×3

4. 8× 5/4 + 1/4

5. 6÷ 3/8 – 3/8 ÷6

6. 4/7 × 5/9 + 3/7 × 5/9

7. 5/2 -（ 3/2 + 4/5 ）

8. 7/8 + （ 1/8 + 1/9 ）

9. 9 × 5/6 + 5/6

10. 3/4 × 8/9 - 1/3

0.12χ＋1.8×0.9=7.2 (9－5χ)×0.3=1.02 6.4χ-χ=28+4.4

11. 7 × 5/49 + 3/14

12. 6 ×（ 1/2 + 2/3 ）

13. 8 × 4/5 + 8 × 11/5

14. 31 × 5/6 – 5/6

15. 9/7 - （ 2/7 – 10/21 ）

16. 5/9 × 18 – 14 × 2/7

17. 4/5 × 25/16 + 2/3 × 3/4

18. 14 × 8/7 – 5/6 × 12/15

19. 17/32 – 3/4 × 9/24

20. 3 × 2/9 + 1/3