Mathematics - 1 October 2007

Question: Preform the indicated operations

10x^2 -9xy +2y^2
i have no clue what to do but i think it may have something to do with factoring a perfect square trinomial

2007-10-01 08:53:15 · 4 answers · asked by topnoch22 1

determine, by considering the discriminant, the number of points of intersection with the x axis of the following parabolas

1)y=x^2-7x+3

2)y=5-7x-2x^2

3)y=3x+2x^2

2007-10-01 08:45:12 · 1 answers · asked by Anonymous

A pair of parallel interstate gas and power lines run 10 meters apart
and are equally distant from relay station A. The power company
needs to locate a gas-monitoring point on one of the lines exactly
12 meters from relay station A. Draw a diagram showing the locus of
possible locations.

2007-10-01 08:41:59 · 1 answers · asked by Anonymous

2007-10-01 08:35:51 · 3 answers · asked by sarah 2

Identify the type of transformation given by this rule..

M(x,y)=(x,-y)


and



V(x,y)=(x,y-1)


please help i really dont understand this and i had a substitute teacher today!=[

2007-10-01 08:35:33 · 2 answers · asked by Ally 2

Where is this function continuous...

h(x)=2x/x-4

2007-10-01 08:33:45 · 4 answers · asked by Anonymous

2007-10-01 08:28:37 · 5 answers · asked by Anonymous

Find the x-intercepts, y = x2 – 2x + 4

2007-10-01 08:27:53 · 4 answers · asked by trevor s 2

2007-10-01 08:26:12 · 7 answers · asked by Leighton M 1

its basic algebra but its been so long.

2007-10-01 08:25:37 · 8 answers · asked by Daniel S 1

2007-10-01 08:24:12 · 4 answers · asked by minniemoe 1

What is the value of these expressions? I'm supposed to leave them in three significant digits.

1. [(92.5)(.345)] / 17.4

2. I don't know how to put this. There is a "4" in superscript, followd by the root symbol, with the number .00439 in it? The fourth root of .00439?

3. [(.391)(97.2)]^2

2007-10-01 08:05:14 · 3 answers · asked by zenmaster4 2

Hey, how can i integrate x/(1+(x^4))??? please help.

2007-10-01 07:54:18 · 1 answers · asked by tumbleweedyg 2

2007-10-01 07:35:27 · 8 answers · asked by robin c 1

2007-10-01 07:26:10 · 4 answers · asked by britty 1

2007-10-01 07:25:05 · 5 answers · asked by britty 1

2007-10-01 07:22:55 · 9 answers · asked by britty 1

2007-10-01 07:18:51 · 4 answers · asked by Anonymous

Using algebra, find the set of values of x for which:

2x-5 > 3/x

I know it's not just x>3, but how do I get the other solutions?

Thanks for any help.

2007-10-01 07:06:25 · 9 answers · asked by Anonymous

its for science and i dont know how to do it.....=(

2007-10-01 07:00:53 · 6 answers · asked by joshua e 1

Why open intervals will make the conclusion false?
Anyone can explain to me in details?
If possible, show me an example...
Thanks:)

2007-10-01 06:52:26 · 4 answers · asked by Anonymous

help me plz under stand things.!

2007-10-01 06:50:36 · 3 answers · asked by Anonymous

alright, I forgot these last problems and I can't figure them out
(same rules as these questions:)http://answers.yahoo.com/question/index;_ylt=Ahzt3JUUy9_N5MrpVr.XFizsy6IX;_ylv=3?qid=20071001094901AAfmDsu

if f(x) equals [square root](x-1) and g(x) equals [square root] (4-x) find f(g(2))


also...

2007-10-01 06:35:54 · 4 answers · asked by Kremer 4

In two dimensional array X(7,9) each element occupies 2 bytes of memory.If the address of first element X(1,1)is 1258 then what will be the address of the element X(5,8) ?
1.1460 2.1365 3. 1356 4.1370

2007-10-01 06:34:11 · 5 answers · asked by magz 1

A 0 0 0 0 1 1 1 1
B 0 0 1 1 0 0 1 1
C 0 1 0 1 0 1 0 1
plz explain and solve it..

2007-10-01 06:29:47 · 3 answers · asked by magz 1

If hens of a certain breed lay eggs on 4 days a week, on the average, find how many days during a season of 200 days a poultry keeper with eight hens of this breed will expect to receive at least six eggs.

So, n = 200. Isn't that number a little too big unless I make it a normal approximation or something along those lines? But, that aside, I'm not sure how to interpret the laying eggs 4 days per week to obtain a value for probability (P = 4/7?), and the 200 days is confusing.

Any help'd be very much appreciated!

2007-10-01 06:11:18 · 6 answers · asked by kimiessu 2

Alright, I made a huge mistake taking honors precal and I have a couple questions on how to do questions on my homework that is due tomorrow (I can't consult my book because , just to screw with us, my teacher said she got these problems out of a different book). I don't necessarily need the answers, just some help with how to do them. (can't ask the teacher either, because they are due before school starts)

the first one I am having trouble on...
Graph the function over the interval (-1, 3) state where the function is increasing, decreasing, and constant. Also state any relative minimums or maximums to 2 decimal places.
--I get how to graph and stuff, but does it mean only include increasing/decreasing over the interval or all points?--

second....
find f^-1(x) if f(x) = (2x+1)/(x-1) x does not equal 1
--this is finding the inverse, and I can usually get these with no problem, except I have never done one where it is over an "x" equation. I can't get passed x(y-1) = 2y +1

2007-10-01 05:49:01 · 5 answers · asked by Kremer 4

3x + 3 = 2x + 2
Please show your work

2007-10-01 05:48:11 · 5 answers · asked by twhoodoo 2

2007-10-01 05:39:16 · 7 answers · asked by Anonymous

2007-10-01 05:38:23 · 5 answers · asked by Anonymous