Mathematics - 13 September 2007

1. The length of a rectangle is 6 centimeters more than its width. If x represents the width of the rectangle, write an algebraic expression in terms of x that represents its area and simplify the result

2. Simplify and write with positive exponents only: 4(xy^2)^2
All variables represent positive real numbers

3. Simplify and write with positive exponents only: a^-4b^3)^-3
All variables represent positive real numbers

4. Change to radical form: 3y^3/5

2007-09-13 06:07:30 · 5 answers · asked by jane 1

How do I find the vertex of the parabola defined by: y=x^2-8x+18? Then how do I find the equation of the line through the vertex and the point, (8,1)??

Thanks

2007-09-13 06:03:01 · 5 answers · asked by k_artiaco 1

How do I Rationalize and Simplify this problem:

sqrt 22 / sqrt 55

2007-09-13 06:00:06 · 8 answers · asked by shauna s 1

and we have to find his sisters present age.i nees formula

2007-09-13 05:58:57 · 4 answers · asked by i love.. 1

2007-09-13 05:45:45 · 16 answers · asked by Anonymous

can some one please explain this?

2007-09-13 05:42:42 · 1 answers · asked by sh 1

Why?

2007-09-13 05:29:41 · 16 answers · asked by shade930 1

so that at time t=3, 6inches to the left of the origin.
V(t) = 9t^2 - 6t
AT What time will the particle be at rest?

2007-09-13 05:07:50 · 2 answers · asked by PETER PAN 2

2007-09-13 05:03:05 · 4 answers · asked by Alexander 6

Four months ago, I ran a mile in 7 minutes 53 seconds. I am twelve years old.

2007-09-13 04:57:20 · 10 answers · asked by MATHCOUNTS_awesome 3

pleaaaassseee heeeeellp... Im so confused.

2007-09-13 04:51:49 · 11 answers · asked by aquasahara 2

well,,
IIT - indian institute of technology,,(world's 3rd best university) had this problem in its entrance exam-->

u have 10 same looking bags,
100 coins in each,,
9 of them has coins weighing 10 gms each,,remaining one has coins weighing 9 gms each,,
u have a digital weighing machine,,with one balance on it,,
only one chance to measure the weight on it,,and find which bag is it that contains the coins weighing 9 gms,,

just give me a method to know which could be the bag,,
^_~

2007-09-13 04:45:18 · 4 answers · asked by gunkedar 2

Does any one know what this quantifier means in English and its truth value?

∀x ∈ Z (X^2 ∈ Z)

2007-09-13 04:15:11 · 3 answers · asked by Carlos 2

Simplify the expression.
tan(sin-1(x))

2007-09-13 04:14:43 · 1 answers · asked by lady_divine@sbcglobal.net 1

A tailor uses 16 ft of lace to trim the edges of a rectangular tablecloth. If the tablecloth is w feet wide, express its area as a function of the width.

2007-09-13 04:08:01 · 5 answers · asked by It's me! 2

Would all the sides be congruent??? I need help!

2007-09-13 04:02:39 · 10 answers · asked by aquasahara 2

2007-09-13 03:41:14 · 3 answers · asked by stevo_1978 1

Check whether the given ordered pairs are solutions of the inequality.

y < -9x + 7; (-2,2), (3, -8)

2007-09-13 02:57:51 · 9 answers · asked by nickmydog 1

What is the value of sine pi/2?
What is the value of r on this (sin = y/r)?

Im just confused..tnx..=D

2007-09-13 02:21:42 · 2 answers · asked by bnj 3

2007-09-13 02:13:56 · 3 answers · asked by Kenny 1

If 2 does not divide a, then 4 divides (a^2 - 1).

2007-09-13 02:09:58 · 1 answers · asked by Anonymous

solve the following separable equation

1)dy/dx=2/3y^2x^1/3

2)dy/dx=y/(x(x+1)

3)dy/dx=y^1/2xe^x^2

would appreciate the help ... I have the solutions .. however I think I did them all wrong .... thxs

2007-09-13 02:04:27 · 2 answers · asked by Anonymous

a) 0.31311311131111...
b) 0.729999...
c) 0.376237623762...
d) 17 and 4/5

Thanks guys...you're thje best!

2007-09-13 01:58:11 · 2 answers · asked by tom a 1

2007-09-13 00:11:46 · 2 answers · asked by gracey 1

2007-09-13 00:07:27 · 6 answers · asked by anna a 2