Mathematics - 4 November 2007

y= (1+3x) / (5-2x)


How to do it..??

2007-11-04 14:06:55 · 3 answers · asked by alexo 4

2007-11-04 14:02:12 · 4 answers · asked by tarheel2381348 1

Can anyone help me with these last few problems on a review?Thanks!

1.) find a formula for the general term, an for 1/2, 1/4, 1/8, 1/16, ...

2.) Write down the first five terms of the following recursively defined sequence.
a1 = 2; an+1 = - 2an - 3 (the "n" are subscripsts)
(i got 2, -7, -16, -25, -34 which is wrong)

3.) Scott and Amanda want to purchase a house. If they invest 400 dollars per month into a mutual fund how much will they have for a downpayment after 8 years if the per annum rate of return of the mutual fund is assumed to be 9.5% compounded monthly?

4.) Evaluate
Summation from 1 to infinity of 2/(n(n+2))

5.) If the following series converges, compute its sum. Enter INF if it diverges to infinity, MINF if it diverges to minus infinity, and DIV otherwise.
Summation from 1 to infinity of (e^(-1n)-e^(-1(n+1)))

6.) Evaluate
Summation from 1 to inifinity of (-4^(n-1))/(8^n)
(i got -1/4 which is wrong)

7.) Evaluate
Summation from 1 to inifinity of (4^(n)+6^(n))/(10^n)

2007-11-04 13:56:50 · 2 answers · asked by Anonymous

use complete the square method

2007-11-04 13:56:39 · 3 answers · asked by Jake 1

not quite sure how to work this, tried graphing it out, and I was able to make some pretty pictures but not sure if that's really how you're supposed to do it. :D

A triangle is defined by the following vertices: (40,85), (15,0), and (-40,35). Is it a right trangle?

2007-11-04 13:55:45 · 4 answers · asked by dustin_r_85 1

2x+3y=28
4x-5y=-10

2007-11-04 13:53:54 · 3 answers · asked by Jamie M 1

What are the mechanics (steps involved) in doing this? My text just provides examples without explaining what is going on, how things are moved, etc. Example:

1.
6x -5y = 9
(1/2)x +2y =6

2.
x-7y = -6
4x-5y = 28

2007-11-04 13:47:22 · 1 answers · asked by dustin_r_85 1

2007-11-04 13:39:47 · 4 answers · asked by abraymond5 1

2007-11-04 13:29:47 · 5 answers · asked by jokersrage2 1

2007-11-04 13:25:29 · 15 answers · asked by wes r 1

1)The direct distance between city A and city B is 200 miles. The direct distance between city B and city C is 300 miles. Which could be the direct distance between city C and city A?
A)550 miles B)650 miles C)50 miles D)350 miles

2)The image of point (3,4) when reflected in the y=axis is A)(3,-4) B)(4,3) C)(-3,-4) D)(-3,4)

3)When the point (2,-5) is reflected in the x-axis, what are the coordinates of its image? A)(-5,2) B(-2,5) C)(2,5) D)(5,2)

please help me!!

2007-11-04 13:24:07 · 4 answers · asked by Anonymous

2007-11-04 13:19:22 · 4 answers · asked by The Ans 3

2007-11-04 13:12:49 · 3 answers · asked by Anonymous

choices: -14, -7 ,14, or -3

2007-11-04 13:08:54 · 7 answers · asked by Nae 1

Please answer the following question: log 39 i squared to the power of x base 7 arguement squareroot of 9908 to the cuberoot of 5i.

2007-11-04 13:04:32 · 1 answers · asked by Abhinav R 1

help help help

2007-11-04 12:55:15 · 6 answers · asked by hotty girl 2

im just a little confused on some simple considerations of the derivative properties do we take teh constant x into consideration? And how would u do this problem?

2007-11-04 12:52:21 · 5 answers · asked by liquid_force_evolution 2

2007-11-04 12:52:12 · 7 answers · asked by Anonymous

formula: S=L-rL
Solve for r in the formula above

2007-11-04 12:47:23 · 7 answers · asked by jennifer 1

(-5) what is the deal with this?
What do I do?

2007-11-04 12:46:11 · 7 answers · asked by Jon J 2

Solve this equation if the domain is { -4, -2, 0, 2, 4}
4x - 3y = 0

2007-11-04 12:42:45 · 3 answers · asked by fabulous! 1

2007-11-04 12:42:08 · 7 answers · asked by Anonymous

2007-11-04 12:37:39 · 2 answers · asked by brittanyy 2

What is the difference between convergent and divergent series? How is a convergent series sum related to the limit of the series? How are asymptotes related to limits? As series become infinite, how do the sums of convergent series differ from the sums of divergent series? How can we ever know what happens to a function or series as it approaches infinity?

2007-11-04 12:34:31 · 1 answers · asked by hjunetta 1

1)the expression radical 27 + radical 12 is equivalent to....A)5 radical 6 B)5 radical 3 C)radical 39 D)13 radical 3

2)In a class of 50 students, 18 take music, 26 take art, and 2 take both art and music. How many students in the class are not enrolled in either music or art? A)6 B)8 C)16 D)24

3)The set of intergers {3,4,5} is a Pythagorean triple. Another such set is A){6,8,12} B){8,15,17} C){6,12,13} D){6,7,8}

please help me!

2007-11-04 12:32:18 · 1 answers · asked by Anonymous

2007-11-04 12:31:15 · 6 answers · asked by abraymond5 1

1+2(a+1)=3(a+4)

2007-11-04 12:29:03 · 4 answers · asked by Anonymous

Find the domain:

1) 1 / (x^3 + 25)

2) 1 / (x^3 - 25)

2007-11-04 12:26:58 · 2 answers · asked by Ashke 1

2007-11-04 12:24:19 · 3 answers · asked by Anonymous

2007-11-04 12:15:52 · 8 answers · asked by Sweet Pea 1