Mathematics - 27 October 2007

Solve for X
( 4 ) / (x^2 + 10x + 24) / =
( 4) / (x + 4 )

2007-10-27 14:16:24 · 3 answers · asked by Anonymous

Help math word problem urgent!?
Andy,Bob,Chris split $1,000 among them to be invested in diff. ways. each begins with a different amount of money!!!!! . at the end of the year they have a total of $1,500. bob and chris have both doubled their money, while andy has lost $100. what was andy's original portion?

2007-10-27 14:11:44 · 5 answers · asked by ~USA~ 2

I have looked at some of Euclid's proofs in his 13 books but can not find a proof.

2007-10-27 14:03:35 · 5 answers · asked by Anonymous

2 sin x= -1

x | x = ? + 2pi(k)

and

x | x=?+2pi(k)

the answer must be an integer or fraction

2007-10-27 14:01:03 · 1 answers · asked by Anonymous

9 sin^2 Ɵ + 12 sin + 4 = 0

round to the nearest tenth

2007-10-27 13:58:30 · 2 answers · asked by Anonymous

Given that f(x)= (x^2 – x)/x and g(x)= (2x+3)/(x – 1), find f(x) * g(x).

I need to write a test for my Pre-Calc midterm and just wanted to make sure this was correct.

the answer I got was 2x+3. is it right? show your work please ;]

2007-10-27 13:56:48 · 3 answers · asked by winniemazing 2

If X and Y are positive, which of the follwing represent X percent of Y?
A) 0.01XY
B) 0.1XY
C) XY
D) 10XY
E) 100XY

2007-10-27 13:52:42 · 4 answers · asked by Anonymous

This is just a trivia question posted on a site I go to. I've been racking my brain for hours now and I can't come up with an answer because I don't think enough information is given. If it is solvable, any tips on how to do it... or the outright answer would be helpful :P

2007-10-27 13:51:53 · 5 answers · asked by ember_daya 2

Hello, I am trying to understand how to solve these problems. For the first one I don't know what to do and al of my answers come out wrong. I am not good with fractions. For the Second one, I just don't know what to do. So please could you help me by showing what you did so I could get a better understanding of what to do. Thanks.

1)5v over 6 + 7 over 6 = 1 over 12

2) 2(p-7.5)-4=32

2007-10-27 13:32:25 · 15 answers · asked by Anonymous

Who is correct, and if friend #2 is correct what is the correct answer.

2007-10-27 13:31:01 · 8 answers · asked by needs math help! 1

When you change the answer's signs around in an equation, is there a name or property for that?

For example:

-5 - 11 - h = -7
here's where i'm confused: you circle and change the subtraction to addition with a negative, right?
-5 + -11 + -h = -7
-16 + -h = -7
+16 +16
the two 16s on the left are inverse, so they get crossed out, and you solve the other side, which leaves you with:
-h = 9
now are you allowed to just solve for a positive h, like this:
h = -9
or can you? i really have no clue!!!!

2007-10-27 13:30:44 · 5 answers · asked by =^..^= 2

If an integer is divisible by 9, then the sum of its digits is divisible by 9. If the 7-digit integer 1,22X,333 is divisible by 9, what digit does X represent?

2007-10-27 13:28:06 · 4 answers · asked by utkarsh m 1

Solve the Quadratic Equation using the Square Root Principle, Completing the Square, or the Quadratic Formula

(x – 5)^2 = 16
thankyou

2007-10-27 13:26:27 · 13 answers · asked by sumguy 1

some points i mentioned? tnks

http://i181.photobucket.com/albums/x85/ctti_3/Untitled-86.jpg

2007-10-27 13:23:40 · 2 answers · asked by pnetecos 1

determine sin 2Ɵ, cos2Ɵ, and tan 2Ɵ

Which quadrant is 2Ɵ in?

2007-10-27 13:19:23 · 5 answers · asked by Anonymous

i always see questions asking to write an explicit formula for ..... whats the difference between explicit and implicit? thanks!

2007-10-27 13:19:15 · 1 answers · asked by sammyd 2

2007-10-27 13:14:17 · 5 answers · asked by Anonymous

Andrea's salary is represented by 15x^2+20x, and her expenses are 5x^2+5x. What binomial represents the differences? If x=$3, what is the difference each week?

please list your steps
thanks

2007-10-27 12:58:52 · 6 answers · asked by twisternycxx 4

Let a and b be integers not both 0, and let d be a natural number such that d divides a and d divides b. Prove that gcd(a,b)=d if and only if gcd(a/d,b/d)=1

2007-10-27 12:51:04 · 2 answers · asked by Anonymous

Please solve the system:

x - 4y - 5z = -22
2x - 2y + 5z = -11
4x + 3y + z = -10

2007-10-27 12:44:07 · 5 answers · asked by Anonymous

Three more that the sum of x and y?

c subtracted from the sum of x and y?

If one of x is c, what is the other addand?

I am having a hard time trying to figure this out.
Help me!!!

2007-10-27 12:42:35 · 8 answers · asked by max 1

why is the complex fourier series "parts" e^p added from N= -infinity to infinity, whereas the real fourier series parts are added only from N=0 to N=infinity?

2007-10-27 12:38:11 · 4 answers · asked by space monkey 2

-1 as a zero of multiplicity 3
0 as a zero of multiplicity 2
and
1 as a zero of multiplicity 1

f(x)=?
Use 1 for the leading coefficient

2007-10-27 12:28:19 · 5 answers · asked by Anonymous

I know how to solve some identities, but overall I have a hard time on solving them. I don't want an answer relating to a specific problem, but any tips or tricks on how to start solving any type of problem using any of the six functions. I have a test in a few days and we have a limited amount of time to solve the problems so I don't want to just try different things randomly until one works.

2007-10-27 12:24:16 · 5 answers · asked by Armon92 3

please thank you

2007-10-27 12:10:57 · 5 answers · asked by Anonymous

I'm trying to solve a problem, but I can't get the right answer. (Hint. It's -3)

Below is the problem.

Double Integral (x-3y)dA, where R is the triangular region with vertices (0,0), (2,1), (1,2); x= 2u +v, y = u+2v

Please help. I'm trying to study for a midterm.

2007-10-27 12:10:25 · 1 answers · asked by Anonymous

2007-10-27 12:00:05 · 4 answers · asked by Benjamin R 1

I'm doing a stats project and I must determine whether the info. regarding boating fatalities in TN in 2006 as reported by the Tennessee Wildlife Resource Agency is significantly different from the same information as reported by the US Coast Guard. So the question is, what is my dependent variable, and what are the independent variables.

Thanks in advance!

2007-10-27 11:53:44 · 3 answers · asked by sheepsoup2000 1

2007-10-27 11:50:49 · 3 answers · asked by Bobby S 3

2007-10-27 11:49:45 · 13 answers · asked by Loki 1