Recent content by bap902

It's a homework problem on a web-based program that tells you whether or not you are right.

Homework Statement Carlos is 60 years old, is in the 32% marginal tax bracket, and has $544,000 in his Roth IRA. How much money will he have after taxes if he withdraws all the money from the account? Homework Equations (1-tax bracket)x(amount)=earnings after income tax The Attempt at...

Homework Statement Compute the compound amount after 1 year for $7,700 invested at 8% interest compounded quarterly. What simple interest rate will yield the same amount in 1 year? (Round your answer to 2 decimal places.) 2. The attempt at a solution I did this on my calculator so...

Homework Statement http://img338.imageshack.us/img338/5064/picture1nk.png 2. The attempt at a solution I know the area for -1.5 is .0668. I also know that the area of the positive half of the curve is .5000. I don't know how to figure out what the other blue piece is or how much the white...

Thanks! Got it.

I see. I calculated the number of times exactly two sixes would appear. Not quite sure how to do the compliment though.

Homework Statement A die is rolled 13 times. What is the probability of at least two 6's appearing? (Round your answer to four decimal places.) 2. The attempt at a solution I know that the total number of outcomes is 6^13. I did (13nCr2)x(1x1x6x6x6x6x6x6x6x6x6x6x6)/6^13, but the answer...

Thanks! I understand that part now. Do you know what I'd have to do to find out how many married/single people there were 2 years ago?

Thanks for your help! I got the first problem, but I'm still having trouble with the second. I keep trying different things, and it's not coming out right. Also, the 33,100 is not the right answer in the picture.

Here is my first problem -- Homework Statement http://img9.imageshack.us/img9/253/picture15lw.png Homework Equations I know that I have to set up a matrix and multiply in order to solve this problem. However, I'm having difficulty setting up a matrix. The Attempt at a Solution x - green...

Bump.

Anyone?

I have a few questions on three circuits problems that I have already solved. I explained how I arrived at my answers and included diagrams. I would appreciate any help in confirming that my answers are correct. Thank you! 1. The diagram below shows electric currents in conductors that meet...

Thanks for your help. I don't know about the y direction.

Homework Statement Four charges are arranged on the corner of a square. At which points is the electric field equal to zero? Diagram: http://img126.imageshack.us/img126/1994/diagram2zb7.png Homework Equations None The Attempt at a Solution I chose A and B because the charges...