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Recent problems solved by 'kekegeter '

kekegeter answered: 57 problems
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expressions/746234: solve the inequality
-5/7> 1/4- v/2
1 solutions

Answer 455264 by kekegeter (57) on 2013-05-12 21:33:07 (Show Source):

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-5/7>1/4-v/2
-5/7>-2v+1/2^2
-20>-7*2v+7
v>27/14
v Є [27/14,∞]

Exponents/746204: Solve (6xy^3) (4x^2 y^4)
1 solutions

Answer 455261 by kekegeter (57) on 2013-05-12 21:10:24 (Show Source):

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6xy^3*4x^2y^4
24x^1=2 y^3=4
24x^3y^7

Distributive-associative-commutative-properties/746276: Use the distributive property to remove the parentheses for problem: -8 (-4y + w -6)
1 solutions

Answer 455259 by kekegeter (57) on 2013-05-12 20:38:48 (Show Source):

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1) -(-4y+w-6)
2) -(-8.4y+8w-8.6)
3) -(-32y+8w-48)

Equations/745452: 72y2 - 50x2
1 solutions

Answer 454902 by kekegeter (57) on 2013-05-10 21:01:55 (Show Source):

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72*2y-50*2x = 144y - 100x

Equations/747404: What is the step by step process to factor this equation using substitution?
(y-2)^2+5(y-2)-36
1 solutions

Answer 454901 by kekegeter (57) on 2013-05-10 20:51:11 (Show Source):

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1) (y^2+2y(-2)+(-2)^2)+(5y-5*2)-36
2) (y^2-2y*2+2^2)+5y-10)-36
3)(y^2-4y+4)+(5y-10)-36
4) y^2-4y+4+5y-10-36
5) y^2+y-42

Inverses/716850: How do I show my son how to solve this math problem:
4/5 times ___ = 2/5

1 solutions

Answer 454898 by kekegeter (57) on 2013-05-10 20:36:16 (Show Source):

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1) 4/5 X = 2/5
2) 2^2*x/5 = 2/5
3) 2^2*x/2^2 = 2/2^2
4) x=1/2^2-1
5) x=1/2

Inverses/740574: x^2+x/x MULTIPLIED BY 3/x+2
I got 3(x+1)/x+2.
Could you please show me your working for this problem as I am trying to write notes for our exams on this and we need correct working to score the points :)
sorry about writing "Multiplied by" in the middle i cant find that button on my key board :)
1 solutions

Answer 454897 by kekegeter (57) on 2013-05-10 20:20:47 (Show Source):

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Just look for the Asterisk symbol on your keyboard.
x^2+x/x*3/x+2
1) x^2+3/x+2
2) x(x^2)+3+x*2/x
3) xx^1+2+3+2x/x
4) x^3+2x+3/x
I hope that this helps

Exponents-negative-and-fractional/716654: (a^3/m)^-4
1 solutions

Answer 454695 by kekegeter (57) on 2013-05-09 22:19:14 (Show Source):

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(a^3/m)^-4
a^12/1/m^4
m^4/a^12

Exponents-negative-and-fractional/722547: (5y^4)^-3(2y^-2)3
1 solutions

Answer 454694 by kekegeter (57) on 2013-05-09 22:14:33 (Show Source):

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(5y^4)^-3(2y^-2)3
5^-3(y^4)^-3(2y^2)3
5^-3*y^12(2y^2)3
1/5^3*y^12(2y^2)3
6y^2/5^3*y^12
6/125y^10

Exponents-negative-and-fractional/738140: 1.) 3x+12=15/x
2.) 3/x-3=5/x^2-9-2/x+3
1 solutions

Answer 454693 by kekegeter (57) on 2013-05-09 22:02:32 (Show Source):

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1) 3x+12=15/x
x є {1, -5}
2) 3/x-3=5/x^2-9-2/x+3
x є {√85-5/6, √85+5/6}

Exponents-negative-and-fractional/745593: 2/3-4/5-(-11/15)+7/10-5/2
1 solutions

Answer 454688 by kekegeter (57) on 2013-05-09 21:42:02 (Show Source):

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-36/3*5*2
-6/5 or -1.2

Exponents-negative-and-fractional/745595: -9.6+7.4-(-3.9)-(-11)
1 solutions

Answer 454684 by kekegeter (57) on 2013-05-09 21:37:21 (Show Source):

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-9.6 + 7.4 + 3.9 + 11
= 127/10 or 12.7

Equations/745503: 7/12y-1/4=2y-5/3
1 solutions

Answer 454682 by kekegeter (57) on 2013-05-09 21:30:02 (Show Source):

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7/12y-1/4=2y-5/3
y € {1, -7/24}

Equations/745156: Solve the following system of equations:
9x+5y=-4
-8x+3y=7
1 solutions

Answer 454681 by kekegeter (57) on 2013-05-09 21:20:54 (Show Source):

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9x+5y=-4
9x=-5y-4
x=-5y+4/9

8x+3y=7
-8x-3y+7
x=- -3y+7/8

Equations/746190: 4x-6=18 por favor necesito esta respuesta

1 solutions

Answer 454680 by kekegeter (57) on 2013-05-09 20:56:05 (Show Source):

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4x-6=18
4x=24
x=6

Equations/745567: 4n -3 (n-8)=3 - 2n
1 solutions

Answer 454678 by kekegeter (57) on 2013-05-09 20:53:20 (Show Source):

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4n-3(n-8)=3-2n
4n-(3n-24)=-2n+3
3n=-21
n=-7

Equations/745252: -3p + 4 < 22
1 solutions

Answer 454677 by kekegeter (57) on 2013-05-09 20:47:51 (Show Source):

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-3p+4<22
-3p<18
p>-6
P€(-6,∞)

Equations/745212: solve the following equations
4x – 3 = 25
2x – 7 = x + 8
1 solutions

Answer 454533 by kekegeter (57) on 2013-05-09 12:35:48 (Show Source):

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4x-3=25
4x=28
x=7

2x-7=x+8
(2x-7)+(7-x)=(x+8)+(7-x)
x=15

Equations/746641: 4n⁴ ∙ 2n-3
4n^2*2n-3
8n^2+1-3
8n^3-3
1 solutions

Answer 454529 by kekegeter (57) on 2013-05-09 12:19:57 (Show Source):

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4n^2*2n-3
8n^2+1-3
8n^3-3

absolute-value/650651: 1)|x-6|=2
2)|4n|=20
3)|x/2|=2
4)|-3-7n|=60
5)|4m-3|=33

1 solutions

Answer 407365 by kekegeter (57) on 2012-09-13 00:01:57 (Show Source):

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1)|x-6|=2

x=8
-x+6=2
x=8
-x=-4
x=8
x=4
The answer: 8,4
2)|4n|=20

n=5
-4n=20
n=5
n=-5
The answer: 5,-5
3)|x/2|=2
x=4
x=-4
The answer: 4,-4
4)|-3-7n|=60
-7n=63
7n+3=60
n=-9
7n=57
n=-9
The answer: -9, -15/2
5)|4m-3|=33
4m=36
-4m+3=33
m=9
-4m=30
m=9
m=-15/2
The answer: 9, -15/2

Equations/650670: i need help on how to do these
1) x^2+1=3
2) x+4+5+1
3) 6x=12
please help
1 solutions

Answer 407362 by kekegeter (57) on 2012-09-12 23:42:47 (Show Source):

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1) x^2+1=3
x^2=2
x= 2 1/2
x= -2 1/2
The answer is: 2 1/2, -2 1/2
2) x+4+5+1
The answer is: x+10
3) 6x=12
6x/6=12/6
x=2^2*3/ 2*3
x=2^2-1
The answer is: x=2

Polynomials-and-rational-expressions/650653: (2a^2+6) (a^3-a^2)
------ times -------
(a^2-a) (8a-4)
These are fractions multipling together as a rational expressions
1 solutions

Answer 407360 by kekegeter (57) on 2012-09-12 23:30:38 (Show Source):

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2a^2+2*3/a(a-1) * a^2(a-1)/2^3*a-2^2
2(a^2+3)/a(a-1) * a^2(a-1)/4(2a-1)
2(a^2+3) a^2(a-1)/2^2* a(a-1)(2a-1)
(a^2+3)a/2(2a-1)

Have a nice day!!

Equations/643546: -8+[9+(-2)]
1 solutions

Answer 405692 by kekegeter (57) on 2012-09-05 00:46:56 (Show Source):

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-8+7= -1

Equations/644260: 6-1*0+2/2=
1 solutions

Answer 405691 by kekegeter (57) on 2012-09-05 00:43:54 (Show Source):

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6+1
=7

Equations/645545: Solve the system
2x-4y-2z=12
x-y+z=7
-5x+5y-3z=-33
1 solutions

Answer 405690 by kekegeter (57) on 2012-09-05 00:41:24 (Show Source):

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2x-4y-2z=12
2x=4y+2z+12
x=2y+2+6
___________
-5x+5y-3z=-33
-5x=-5y+3z-33
x=- -5y+3z-33/5
_______________
x-y+z=7
x=y-2+7

Equations/644461: Please help me find the solutions to x^2+2x-12=-12. Help find the two x.
1 solutions

Answer 405687 by kekegeter (57) on 2012-09-05 00:30:59 (Show Source):

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

Equations/645686: -(x-3)=-4x
1 solutions

Answer 405686 by kekegeter (57) on 2012-09-05 00:22:03 (Show Source):

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3=-3x
3x/3=-3/3
x= -1

Equations/645856: (-90)/(x^2)-(1)/(x)
1 solutions

Answer 405685 by kekegeter (57) on 2012-09-05 00:19:08 (Show Source):

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-90/x^2 - 1/x
(-2*3^2*5)+x(-1)/x^2
(-2*9*5)-x/x^2
(-90)-x/x^2
-x+90/x^2

Equations/645872: x/2-4=-5
1 solutions

Answer 405684 by kekegeter (57) on 2012-09-05 00:10:55 (Show Source):

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x-2*4/4=-5
x-8/2=-5
x-8=-10
x=-2

Equations/645967: (−5x/8)-(1/3)=(7/3)

1 solutions

Answer 405683 by kekegeter (57) on 2012-09-05 00:07:14 (Show Source):

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-5x/2^3*1/3=7/3
-5x/2^3*3=7/3
-5x=56
5x/5=-56/5
x=-56/5

Numbers_Word_Problems/645995: How to solve this kind of problem (+7)+(+5)+(-4)+(+9)
1 solutions

Answer 405682 by kekegeter (57) on 2012-09-04 23:57:51 (Show Source):

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7+5-4+9
=17

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Recent problems solved by 'kekegeter '