Mathematics - 5 October 2007

A retiree receives a payout from his Roth IRA where the taxes have already been paid.
He wants to take out 10% of the original amount at the beginning of each year for living expenses. The remaining money will earn 6% interest. How long before the money runs out?
For example, he starts with $400,000 and takes out $40,000 each year. The first year the interest would equal $360,000 * 6% or $21,600. So the second year would start with $381,000.
If you have a formula to put in a spreadsheet, it would help.

2007-10-05 09:39:21 · 3 answers · asked by Menehune 7

how do you do the limit as x approaches infinity of arctan (x^5-x^-7)? Thanks

2007-10-05 09:36:22 · 2 answers · asked by ILuvTaraReid 2

Find all positive intergers n (with n>1) for which n! is divisible by

n
sigma i
i=1

PS: I can't figure out how to express the sum symbol

what is the answer and how do u do it??

2007-10-05 09:33:25 · 2 answers · asked by dotadh 1

2007-10-05 09:17:50 · 6 answers · asked by Anonymous

Jose has savings accounts for each of his five children. They contain $215, $156, $318, $75, and $25. Find the median and the mean amount of money per account.

2007-10-05 08:57:30 · 5 answers · asked by Anonymous

Solve for x and then check your answers? Will someone help me out with this?

1.) -3x = 27


2.) 3/7x = 15

(Second problem is a fraction 3/7 with x right behind it)

2007-10-05 08:55:29 · 8 answers · asked by Anonymous

suppose that the sum of the squares of two complex numbers x and y is 7 and the sum of their cubes is 10. What is the largest real value that x+y can have?

thx.

2007-10-05 08:54:07 · 1 answers · asked by Meow* 2

From this article today: http://news.yahoo.com/s/ap/20071005/ap_on_re_us/odd_shared_birthday

A couple in Ohio gave birth to their third child, each born on Oct. 2. The odds of a family having three children born on the same date in different years are about 7.5 in 1 million, said Bill Notz, a statistics professor at Ohio State University.

I don't understand why the answer wouldn't be (1/365) to the third power, or 1 in 48,627,125?

2007-10-05 08:52:53 · 4 answers · asked by Wheels 4

Find the quotient:

(14y+8y^2+y^3+12) / (6+y)

Thanks for the help!

2007-10-05 08:51:25 · 6 answers · asked by John 1

i need a link for an article or somethingg about the Fundamental Theorem of Algebra in an easy way!! and please explain what it is because i do not understand it AT ALL!!

2007-10-05 08:37:55 · 2 answers · asked by ? 1

2 9 5 13 10 19 17?

2007-10-05 08:36:26 · 7 answers · asked by yvonnah 2

please hurry

2007-10-05 08:29:05 · 3 answers · asked by ilovedstny 1

1. 12 - 6x = 18 - 7x

2. x + 3/4 = -9/2

3. 8 ( y + 3 ) =3(2y + 12)

4. x/2 + 2x/3 + 3 = x+3

5. x-2/3 - 4 = x +1/4

2007-10-05 08:24:18 · 6 answers · asked by Anonymous

2007-10-05 08:22:58 · 2 answers · asked by Anonymous

What is the rate of change of line AB?

2007-10-05 08:20:59 · 2 answers · asked by Anonymous

2007-10-05 08:19:45 · 4 answers · asked by Anonymous

2007-10-05 08:14:58 · 5 answers · asked by Valand M 1

...parallel?

2007-10-05 08:14:45 · 3 answers · asked by Anonymous

remainder is:

2007-10-05 08:06:16 · 5 answers · asked by TheRaver 2

please hurry

2007-10-05 08:01:33 · 4 answers · asked by ilovedstny 1

2007-10-05 07:58:48 · 7 answers · asked by C鳡r V 3

1.) 3 miles=_______m
2.) 0.65mm=______cm
3.) 1m 5cm=_______cm
4.) 1/2inches=_______yards

2007-10-05 07:55:42 · 4 answers · asked by cmm14513 2

Alex invested $27,000 in two accounts: one that pays 2% simple interest and one that pays 3% simple interest. At the end of the year, his total return was $685. How much was invested in each account? Please explain your answer.

2007-10-05 07:52:26 · 7 answers · asked by LeXy 3

2007-10-05 07:23:09 · 9 answers · asked by adamsaleatha 1

2007-10-05 07:05:32 · 4 answers · asked by smooches 1

Unless already stated? My math teacher went into an explantion but I didn't really get it, maybe you people can explain better?

Also, what does the "laun" button mean on my calculator (it looks like "Ln")? My math teacher said it is has something to do with logs but I don't know exactly.

2007-10-05 06:59:05 · 5 answers · asked by Anonymous

help me, please to calculate the quantity Q=400e ^ 5.
Thanks

2007-10-05 06:39:35 · 6 answers · asked by aurelijad 1

A car starts from rest and accelerates at 6.00m/s^2. How far does it travel in 3.0seconds??


Thanks sooo much for the help. It is appreciated! :)

2007-10-05 06:39:10 · 4 answers · asked by PaNaSoNiCeDgE 1

5. A merchant bought 30 dozen pairs of gloves. How many individual gloves did the merchant buy?


A. 360
B. 720

C. 420

D. 300




6. If a thermometer indicates 40 degrees Celsius, what is the temperature in degrees Fahrenheit?

A. 22°F
B. 54°F

C. 72°F

D. 104°F




7. The gross weight of a package and its contents is 11 pounds 5 ounces. If the packaging weighs 1 pound 15 ounces, what is the net weight of the contents?

A. 10 lb. 5 oz.
B. 12 lb. 20 oz.

C. 9 lb. 6 oz.

D. 10 lb. 6 oz.

2007-10-05 06:32:59 · 6 answers · asked by arief 1

2007-10-05 06:32:22 · 3 answers · asked by Valand M 1