Mathematics - 20 September 2007

How do u convert a parametric equation into a cartesian equation????

2007-09-20 09:11:10 · 2 answers · asked by hello 1

a) express 3x^2 - 12x + 5 in the form A (x - B)^2 - C , where A, B and C are constants whose values should be stated

b) find the minimum value in
I) 3x^2 - 12x + 5
II) (3x^2 - 12x + 5) ^2

c)for each expression in b state a value of x which gives the minimum value

2007-09-20 09:09:28 · 3 answers · asked by Anonymous

2007-09-20 09:05:39 · 6 answers · asked by Anonymous

Writing: Find the length of a side of a square whose perimeter and area are the same number, though not the same unit.Explain your reaoning.

2007-09-20 08:57:54 · 6 answers · asked by EricaEcstasy 1

it says graph each equation. The domain is R. what does htis mean? how do i do it?


y=2x+1

2007-09-20 08:57:26 · 2 answers · asked by Anonymous

2007-09-20 08:55:16 · 7 answers · asked by bracedoc2000 1

1)find an equation of the straight line which passes through the origin and is perpendicular to the line y = 1/2x + 3

2)find a cartesian equation for the perpendicular bisector of the line joining A(2,3) and B(0,6)

2007-09-20 08:49:17 · 3 answers · asked by Anonymous

y=sin(xy) with respect to y.

i got here: y'=cos(xy)(y+y'x)

and now im stuck

2007-09-20 08:21:46 · 4 answers · asked by Sally B 2

The ages of the eight-member school board are listed below.

28, 40, 34, 46, 60, 34, 51, 57

If A is equal to the median age of the group and B is equal to the mode of the group/s age, what is the value of A-B?

6
7
8
9
10

2007-09-20 08:01:06 · 7 answers · asked by Anonymous

2007-09-20 07:53:09 · 10 answers · asked by Anonymous

2007-09-20 07:46:42 · 5 answers · asked by Anonymous

http://i2.photobucket.com/albums/y48/xxkrystinaxx9/Picture4-1.png

2007-09-20 07:39:53 · 6 answers · asked by Anonymous

Find the equation of the plane containing these two lines...

L1(t) = < -7, 3, -2 > + t < 4, 0, -1 >

L2(t) = < 0, 1, -7 > + t < 1, 2, 3 >

I'm so confused. Please help.

2007-09-20 06:49:36 · 3 answers · asked by bigbadbutters05 2

Find the equation of the tangent plane to x^2+y^2+z^2 = 7z at the point (3,-1,2)

*The answer is 6x-2y-3z=10, but I don't know how to do this problem. Please show me the steps.
Thanks.

2007-09-20 06:39:40 · 2 answers · asked by dkmu 1

If a 73.0-foot flagpole casts a shadow 51.0 feet long, what is the angle of elevation of the sun (to the nearest tenth of a degree)?

2007-09-20 06:29:23 · 7 answers · asked by Princess 2

2007-09-20 06:21:25 · 6 answers · asked by justblaze322 1

*****there are THREE ANSWERS total******
pre cal problem. please help.

2007-09-20 06:12:30 · 7 answers · asked by icygurl555 1

*****there are FOUR ANSWERS total****
pre cal prob please help.

2007-09-20 06:09:37 · 4 answers · asked by icygurl555 1

proof that y=z

2007-09-20 06:07:53 · 3 answers · asked by Curious 2

Find c so that both functions are continuous.

(x + 3), x is less than/equal 2
(cx + 6), x is greater than 2

2007-09-20 06:01:32 · 2 answers · asked by dizzawg16 3

in the fom a+bi, where a and b are real numbers.
please help. pre cal problem.

2007-09-20 05:58:30 · 9 answers · asked by icygurl555 1

2007-09-20 05:26:44 · 10 answers · asked by Anonymous

2007-09-20 05:05:06 · 22 answers · asked by Anonymous

I have to write a formula for the following pattern:
1,5,12,22,35 etc.
(the difference between the numbers goes up by three.. eg. 5-1=4, 12-5=7, 22-12=10 etc.)
I can use as many variables as needed, and I have to find a formula that applies for any given whole number...

2007-09-20 04:56:59 · 2 answers · asked by Anonymous

log(base a) x + log(base a) x^2 + log(base a) x^3 + log(base a) x^4 = 5

2007-09-20 04:48:39 · 6 answers · asked by keshema2003 2

its height in feet t seconds later is given by y = 44t - 16t2.

Find the average velocity for the time period beginning when t = 2 and lasting 0.5 second.

Find the average velocity for the time period beginning when t = 2 and lasting 0.1 second.


Estimate the instantaneous velocity when t = 2.

2007-09-20 04:44:40 · 4 answers · asked by Anonymous

2007-09-20 04:39:36 · 12 answers · asked by robin s 1

I have to factorise the following:
X3-4X2-X+4
(Xcubed-4Xsquared-X+4
Could Someone please explain what steps I need to do to factorise the expression, and other similar ones and don't know the method.

2007-09-20 04:10:41 · 10 answers · asked by irashymisfit 3

I got 3x / 5x. Is this right?

2007-09-20 04:00:49 · 8 answers · asked by Anonymous

i'd do it myself, but i CANT.
in a triangle, the angle A = 71 degrees 48 minutes
|bc| = 18 cm
and |ac| = 12 cm
find i) (angle of) abc
ii) |ab| correct to the nearest cm

how do i do this??

2007-09-20 03:53:05 · 2 answers · asked by plasticbag 2