Mathematics - 11 December 2007

Kelly has 20000 to invest. As her financial planner, you recommended that she diversify into three investments: Treasurybills that yield 5 % simple interest, Treasury bonds that yield 7 % simple interest, and corporate bonds that yield 10 % simple interest. Kelly wants her investment in corporate bonds. How much money should Kelly place in each investments?

2007-12-11 05:22:11 · 1 answers · asked by star baller 360 5

i've been working on this one for a long time and just can't find an answer. if you could tell me step by step how it can be done, that would be great.

2007-12-11 05:09:58 · 9 answers · asked by mr j 4

y/3 = 6/5

2007-12-11 05:05:26 · 6 answers · asked by Trisha 2

2007-12-11 05:05:05 · 0 answers · asked by darrilyn p 1

1. 8 + 45r – 18r2
a. (4 – 2r)(2 + 9r)
b. (4 + 18r)(2 – r)
c. (8 – 3r)(1 + 6r)
d. prime


2. 35y2 + 2y – 24
a. (7y + 6)(5y – 4)
b. (7y + 12)(5y – 2)
c. (35y – 24)(y + 1)
d. prime

2007-12-11 05:05:02 · 2 answers · asked by Anonymous

2007-12-11 05:00:25 · 7 answers · asked by Jenny D 1

Find the area bounded by graphs of the indicated equations over the given interval

y= x^2 - 20 ; y = 0 ; -3 < or = x which is < or = 0

can anyone help me with this? i know that x^2 is a parabola. but i'm stuck

2007-12-11 04:56:58 · 3 answers · asked by Lisa S 1

I have solved this equation in my Graphing calculator, which gives an answer of 1.28 rads or 73.1°. Can anyone solve it algebraically?

2007-12-11 04:55:09 · 4 answers · asked by vibin_isp 1

I am trying to do some problems for calc review, and everytime I attempt this problem, I end up getting stuck, anyone care to show me how this problem is done?

f(x)= 1/x^(1/2) assuming x>0.

I need to use the definition f'(x)=lim h->0 (f(x+h)-f(x))/h

2007-12-11 04:54:49 · 2 answers · asked by Robert N 3

F(s) = (e^(-6s)-e^(-7s))/(s^6))

2007-12-11 04:38:53 · 1 answers · asked by Kai 4

Question: Find the line tangent to the equation y=ln(y/x) at the point (e,1) using implicit differentiation.

...please help!!

2007-12-11 04:29:30 · 3 answers · asked by txgurl4sho 1

This is a mathematical statement: 0,9999999999999 (inifitely) = 9/9 = 1.

Do you agree, yes or no and why?

2007-12-11 04:28:00 · 20 answers · asked by Anonymous

2x -3y -z =0
-x +2y +z =5
3x -4y -z =1

2007-12-11 04:20:44 · 3 answers · asked by Anonymous

2007-12-11 04:18:13 · 4 answers · asked by madk63 1

2007-12-11 04:16:48 · 5 answers · asked by Anonymous

Let vector F(x,y)=<√y , √x> be a force field. Let R be the region bounded by y=0, x=2 and y= (x^3)/4. Let C be the closed curve, oriented counter-clockwise, which is the boundary of region R.

A. Draw a sketch of R and C. (I know...you can't do it on here...just giving all the instructions).
B. Using a Line Integral, compute the work done by the force field F on an object that travels one time around the path C.
C. Compute the following double integral:
∫ ∫½((x^-½) - (y^-½))dA
D. Does Green's Theorem say that your answer from part b and c should be equal? Are they equal?

Okay...so I know that I can't use Green's Theorem on the region enclosed by curve C, since F does not have first order partial derivatives at the origin. But the way that they work the problem out makes no sense to me....So please could a GENIUS help me with the problem...Please explain it so that I can understand!!!! Thanks so much for your work! (And your brain power! haha!) =)

2007-12-11 04:14:42 · 3 answers · asked by livingall_4_god 2

in maths! lol what is it?! and in language a 12 year old wud no ! please thanks xxxx

2007-12-11 04:13:56 · 16 answers · asked by PaIgE c 1

y=sin (xy^2)

Only the y in the parentheses is squared...not the x. You don't have to show your work. Just give me an answer. Thanks.

2007-12-11 04:13:08 · 2 answers · asked by Sam 6

what is the sum of this infinite geometric sequence
24,-12,6,-3.............
I dont even know how to start this. help please

2007-12-11 04:13:00 · 3 answers · asked by nancy 1

2007-12-11 04:07:44 · 1 answers · asked by Anonymous

Thank You. Consider the function .?
Consider the function .?
f(x)=x^2-8x+12
a) Find h, the x-coordinate of the vertex of this parabola.

b) Substitute the two whole number values immediately to the left and right of h into the function to find the corresponding y. Fill in the table below. Make sure your x-values are in increasing order in your table.
x y

2007-12-11 04:06:20 · 2 answers · asked by ViewSonic 2

2007-12-11 04:01:41 · 1 answers · asked by Jose T 1

I have gotten this far:
x^2-2x-11=0
-b+or-sq. rt. of b^2-4ac/2a
2+or- sq.rt. of (-2)^2-4(1)(-11)/2
2+or- sq.rt. of 48/2

I can't figure out what to do to simplify the equation after. Since the sq. rt. of 48 is not a real #, what do we do to simplify?

2007-12-11 04:00:07 · 5 answers · asked by Jenny D 1

27 cm is the length

2007-12-11 03:59:03 · 4 answers · asked by Anonymous

Heres a typical example:

3x+2y=4
5x-2y=18

And

2x+3y=2
8x+3y=17


And

3x-4y=6
5x-4y=2


I dont want to know how to solve them, all I need to know is how do you know weather to + or minus the numbers? like in the last example I know you cancell the 4y to become 0 but what about the 3x and 5x does that minus to? ( + and + = - )

Thanks for the help

2007-12-11 03:57:37 · 4 answers · asked by Anonymous

2007-12-11 03:57:08 · 10 answers · asked by Anonymous

2007-12-11 03:55:21 · 6 answers · asked by aaronluevanos 1

√26

a. 13
b. 13√2
c. 2√13
d. √26

2007-12-11 03:53:57 · 2 answers · asked by . 1

When I draw a triangle and then enlarge it with a scale of what ever : How can I find the centre of enlargement of those 2 Triangles ? Thank you

2007-12-11 03:50:11 · 2 answers · asked by Anonymous

THIS IS HOW THE PROBLEM ACTUALLY IS PLACED....... 4X+Y=-2. and below it is... 4X+3Y=-12 how is it that i can go about solving it and get the right answer?thanks MC

2007-12-11 03:38:22 · 2 answers · asked by Michelle C 1