Mathematics - 15 December 2007

10x-(10/x^2) = 112 + 2/3

I posted this in question before and was told to multiply everything by 3x^2. I see the reasoning behind doing this, but how do you determine that 3x^2 was the right number for doing it? I'm sure it just wasn't a guess?

2007-12-15 16:11:56 · 4 answers · asked by Anonymous

show all work. the carat denotes exponent value

2007-12-15 16:11:43 · 4 answers · asked by diva 1

show all work

2007-12-15 16:09:59 · 8 answers · asked by diva 1

Is 5/4 a root of 4x^7+6x^6+3x^5+250^4+1000x+75x^2-20x+17=0?

2007-12-15 16:01:54 · 2 answers · asked by Quagmire77 1

sin pie/7 sin 2pie/7 sin 3pie/7 = (sqrt7)/8

2007-12-15 15:57:54 · 2 answers · asked by sameerteacher01 1

2007-12-15 15:38:35 · 3 answers · asked by ARAX 2

(1) x = 4
(2) x^2 + y^2 = 4
(3) x + y = 16
(4) x^2 + y^2 = 16

2007-12-15 15:28:06 · 4 answers · asked by Kevin G 2

hey... i've been doing a survey for school. The data i collected goes this way....

x f(x)
0 0
10 0,2
20 1,2
30 4,2
40 7,7
50 11,8
60 18,8
70 31,6
80 46,6
90 69,8
100 100

the question is:... CAN I GET A FUNCTION FROM THIS DATA... OR WOULD IT BE JUST APPROXIMATE...? IF I CAN, WHICH IS THAT FUNCTION?.... PLEASE, SHOW HOW YOU REALIZED... THANKS


PS: THIS FUNCTION WOULD BE DEFINED FOR ALL x VALUES BETWEEN 0 AND 100... thanks!!

2007-12-15 15:26:16 · 3 answers · asked by Q&A 3

Who else hates when people answer questions in this category with "I'm not going to do your homework for you" or something like that? That is so annoying... What's the point of answering because if you don't answer at all then you're still not doing my homework for me... Or why are you even on Yahoo! ANSWERS if you're not going to give me an ANSWER?! That just ticks me off.

2007-12-15 15:18:06 · 10 answers · asked by shaan 4

This is a differential equations problem. I think you have to find y complementary and y particular. The e throws me off. Please show how you did it. Thanks a bunch.

2007-12-15 15:14:33 · 2 answers · asked by Anonymous

factor
a^3 - 125b^3

(2x)^3 + y^3

a^ 3 + 2ab^2 - 2a^2 b -4 b^3

2007-12-15 14:43:50 · 7 answers · asked by Anonymous

Has 2 be in ur house
Doesn't have 2 weigh exactly 8 oz.
Anything else???

2007-12-15 14:38:39 · 5 answers · asked by Tram l 2

I got -1 but supposedly thats wrong.. does anybody know how to solve it

can you square top and bottom?

thanks for your help

2007-12-15 13:50:58 · 7 answers · asked by Anonymous

(X – 4)/2 – 1/5 = (7x + 1)/20

2007-12-15 13:47:32 · 7 answers · asked by Natalia B 1

How do I find the zeros of f(x) = 2(x^3) + 6(x^2) - 4.5x - 13.5 WITHOUT using the calculator?

I attempted to use the possible rational zeros & synthetic division, but it's a bit complicated...

Step-by-step detailed instructions would be helpful :)

2007-12-15 13:10:27 · 3 answers · asked by =) 1

a) I don't think this is an identity but what it the easiest way to prove it. cos6y= 2cosˆ2(3y)-1

and 2sinxcosx=sin(-2x) is an identity?

2007-12-15 13:00:38 · 4 answers · asked by eklypze 2

The circle whose equation is x^2 + 2x + y^2 + 6y + 6 = 0
has center (1,3) and radius 2
has center (-1, -3) and radius 2
has center (-1, -3) and radius 4
has center (1, 3) and radius 4


The circle whose equation is x^2 - 6x + y^2 + 2y = -4
has center (-3,1) and radius sqrt(6)
has center (3,-1) and radius sqrt(6)
has center (3,-1) and radius 6
has center (-1,3) and radius sqrt(6)


COULD YOU ALSO SHARE HOW YOU GOT YOUR ANSWER! I am having a lot of difficulty with this

2007-12-15 12:59:11 · 2 answers · asked by Anonymous

It is a question from algebraic identities.

2007-12-15 12:55:04 · 10 answers · asked by Anonymous

solve the system if equations by using the elimination-by-addition method

5x + 2y = -4
5x - 3y = 6

2007-12-15 12:50:51 · 3 answers · asked by CBrizz8807 1

HELPPP

2007-12-15 12:46:17 · 3 answers · asked by Mr. Computer 1

2007-12-15 12:43:07 · 0 answers · asked by zjraheem 1

2007-12-15 12:42:32 · 3 answers · asked by ayah_rock_star 1

Solve the following system of equations by using substitution method

y= -3x-18
5x-2= -8

2007-12-15 12:39:49 · 21 answers · asked by CBrizz8807 1

If an original sample of ruthenium-106 had a mass of 128 mg, and there are 2 mg left, what is the elapsed time?

2007-12-15 12:37:07 · 3 answers · asked by Anonymous

Pleasse.
:)

2007-12-15 12:31:39 · 12 answers · asked by Alexa♥ 3

absolute value inequality

let me use " / " for the absolute value symbol

-2/4x + 3/ < -4

if you could help and explain a little on how you did it, that would be greatly appreciated.
Thank you

2007-12-15 12:30:06 · 6 answers · asked by Americanito 1

27^x-1 = 9^2x

25^2-c = 125^2c-4

16^2p+1 = 8^3p+1

(-8)^1-2x = (-32)^1-x

2007-12-15 12:24:11 · 1 answers · asked by Anonymous

9x10¯4 = (3.5x10¯4)Q + 5X10¯3 / Q +5x10¯3

2007-12-15 12:21:38 · 2 answers · asked by Architect Student 1

a)5^2n+1 = 1 / 125

b)1 / 256 = 2^2-5w

c)3^x-1 = 1 / 81

d) 6^3x-7 = 1 / 6

Thank you

2007-12-15 12:20:43 · 1 answers · asked by Anonymous

1/2 x^2 - y =4

x^2 = 36 - 9y^2

2007-12-15 12:15:45 · 2 answers · asked by jamie d 2