Mathematics - 2 October 2007

can you solve this???

2x - 3 / 3x = 5 / 6

This is involved on rational algebraic expressions.,

2007-10-02 23:46:38 · 5 answers · asked by Lance O 1

plz i need to know what is the right number at the empty space ... i really need the answer ...
this is a link for it coz i didnt know how to write it here ...

http://img254.imageshack.us/img254/8880/63878972zm3.png

2007-10-02 23:37:49 · 1 answers · asked by angelink 1

Find Center and Radius of x^2 + y^2 - 4x + 8y - 5 = 0.

2007-10-02 23:13:33 · 2 answers · asked by journey 1

x^2 + y^2 - 6x + 10y - 2 = 0

Find the center and the radius of the circle with equation....


Im confused, any help would be appreciated!

2007-10-02 22:48:32 · 4 answers · asked by rosecrashers1365 2

x^2+8x+5=0

thanks!

2007-10-02 22:37:03 · 3 answers · asked by K Rose 3

Find the equation of the line that is the intersection of the planes x=y=z=1 and y+z=0. (Please show work)

2007-10-02 22:24:14 · 3 answers · asked by sam b 5

I'm not only asking for the answer but rather someone to explain this whole process! My teacher is to lazy to explain it so I've never gotten it and we're going to have a test on pretty soon :|
help?

2007-10-02 22:20:55 · 7 answers · asked by kagome_chan21 2

How do I find the distance between a point, say for example (1,1,1) to a plane, say x+z=0? (Please show work)

2007-10-02 22:19:56 · 3 answers · asked by sam b 5

"At noon a cargo plane leaves O'Hare Airport and heads east at 195 miles per hour. At 2pm a jet takes off from O'Hare and flies east after the cargo plane at 400 miles per hour. At what time (to the nearest minute) will the jet over take the cargo plane?"

2007-10-02 21:53:49 · 7 answers · asked by Anonymous

I don't understand the lesson we are doing but so far i am getting by.. But this one has stumped me. Can somebody try to help?

4y^2=200

With ^2 meaning to the second power.

2007-10-02 21:30:22 · 6 answers · asked by dolphingirl_862003 2

The distance an object falls is directly proportional to the square of the time it has been falling. After 6 seconds it has fallen 1296 feet. How long will it take to fall 2304 feet?

2007-10-02 20:19:56 · 5 answers · asked by ladygodiva89 1

find the set values of x for which:

a) 3(2x+1)>5-2x
b) 2x^2-7x + 3> 0
c) both 3(2x+1) > 5-2x and 2x^-7x +3 >0

thanks for your help in advance.

2007-10-02 19:34:29 · 5 answers · asked by Roller 2

sanitary landfill takes $35/ton of material (you need to deposit 1 ton of carbose, 0.29 tons of sand)

hazardous waste landfill takes $2000/ton (you need to deposit 0.14 tons benzoic acid)

whats the total cost to deposit everything?? please help!!

2007-10-02 19:30:15 · 2 answers · asked by ? 2

Determain the shape of distrabuition of hours worked by drawing a frequency histogram then compute the mean and median ?

0 0 15 20 30
40 30 20 35 35
28 15 20 25 25
30 5 0 30 24
28 30 35 15

2007-10-02 19:29:14 · 1 answers · asked by jimp1174 1

Without using tables or a calculator, solve the equation 4^x + 2^ 2(x - 1) = 160

How to do? I don't even understand...

2007-10-02 19:12:32 · 5 answers · asked by Anonymous

Given that y = ax^b + 5, and that y = 7 when x = 3 and y = 9.5 when x = 2, find the value of a and of b.

Ans: a = 18, b = -2

Please help...

2007-10-02 19:10:20 · 3 answers · asked by Anonymous

Find the equation of the indicated line and write the equation in y = mx + b format
(-3,2) slope is -4
I don't understand how to get the answer
thanks for your help

2007-10-02 18:54:54 · 9 answers · asked by Boo Radley 4

I'm a little confused on the subject of nonremovable vs. removable discontinuity. I know removable means you could make a graph continuous by substituting in a different value, but does that apply only when a y value exists but just isn't continuous?

For example...if you had function that simplified to:

(x-2) / (x-2)(x+2)

You would factor out (x-2) and have discontinuity at 2. But since no y value for x=2 exists at all, is it removable or nonremovable?

2007-10-02 18:45:48 · 4 answers · asked by Anonymous

i have the answers 8/3 ,5 ,5. I want to know how could i get those answers i try but dont undestrand it

2007-10-02 18:41:52 · 4 answers · asked by diego j 2

I don't really care the answer to the question, I more care about how to solve it. Please explain fully and explain this like you would to someone who has no idea how to do this. My teacher sucks, so idk how to do these.
6n^2-11n-2

2007-10-02 18:37:06 · 6 answers · asked by Brian M 3

i have to find the points at which the horizontal tangent line exists.

2007-10-02 18:30:11 · 2 answers · asked by singer4jc108 2

Okay, so We're doing Complete the Squares.
And I have an equation like this. I get stuck though.
H(T)=10t^2+300t+9750
H(t)=10(t^2-30t)+9750
Okay, here I get very confuzzeled.
How in the world do I get whats in the brakets
This is what the step after is..help.
H(t)=10(t^2-30t+225-225)+9570
Please tell me how I'm supposed to get to 225 in here. I don't understand at all.

2007-10-02 18:25:16 · 8 answers · asked by Anonymous

2.4 * 1/2 * (x^2 + 25)^(-1/2) * 2x - 1 = 0

killing me. ughhh

2007-10-02 18:18:05 · 4 answers · asked by AppleCard! 2

The distance between two towns, A and B, is 100 km. Mr Paul drove from A to B at an average speed of v km/h.
Q1) Write down an expression, in terms of v, for the time, in hours, that he took to complete the journey from A to B.

On the return journey, his average speed was 6km/h greater than his speed from A to B.
Write down an expression, in terms of v, for
Q2) his speed for the journey from B to A,
Q3) the time, in hours, that he took for the journey from B to A.

2007-10-02 18:14:49 · 2 answers · asked by Anonymous

2007-10-02 17:57:55 · 3 answers · asked by Hazel 4

x = (x1, x2, ..., xn), y = (y1, y2, ..., yn) element of R^n.

2007-10-02 17:49:42 · 2 answers · asked by bubbula48 1

1. c^12+d^3
2. 1-a^6
3. 64-c^12
4. w^6-x^3y^9
5. 27k^2-k^5
6. 81w-24wx^3

2007-10-02 17:48:17 · 2 answers · asked by Ken B 1

probability

2007-10-02 17:14:34 · 2 answers · asked by clickclack b 1

normally these are simple for me, but apparently missing 1 day of class is a big deal. here's the problem they give me

a1 = [1, 4, -2] a2 = [-2, -3, 7], b = [4, 1, h].
for what values of h is b in the lane spanned by a1 and a2

I'm not entirely clear on what a span even is. this pos book explains it with one paragraph(literally) so I'm assuming it's not as hard as I'm making it out to be. The problem also states that I shouldn't make a sketch, does that mean I shouldn't draw an array? I feel like this simple assignment just made a turn for the worst.

2007-10-02 17:10:12 · 2 answers · asked by SchweppesAle 2

2007-10-02 16:52:27 · 7 answers · asked by chyla212 1