Dunno how to write this one, so I used a screenshot.

http://img111.imageshack.us/img111/8039/mathwordux7.jpg

The thing that trips me up is the 0 seconds.

(Punch) <(I hate Word Problems!)

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- June 29th 2008, 01:21 PMmankvillWord problem about Chemical Half-Lives
Dunno how to write this one, so I used a screenshot.

http://img111.imageshack.us/img111/8039/mathwordux7.jpg

The thing that trips me up is the 0 seconds.

(Punch) <(I hate Word Problems!) - June 29th 2008, 01:26 PMJhevon
- June 29th 2008, 01:27 PMmankvill
a = 38?

- June 29th 2008, 01:30 PMJhevon
- June 29th 2008, 01:41 PMmankvill
- June 29th 2008, 01:51 PMJhevon
haha, stop guessing, and solve it. a would have to be less than 1, of course, otherwise, if you raise it to the 38th power, you would get a number greater than or equal to 1, which is bad, since we have 1/2 on the left hand side

Now, how would you solve for here. what must you do to get rid of that 38th power, and be left with just on the right side? - June 29th 2008, 01:52 PMmankvill
- June 29th 2008, 01:58 PMJhevon
- June 29th 2008, 02:01 PMmankvill
- June 29th 2008, 02:10 PMJhevon
- June 29th 2008, 02:11 PMmankvill
(Hi)

2nd part: How much of a 4 gram sample would be left after 10 seconds? (Wondering) - June 29th 2008, 02:13 PMJhevon
- June 29th 2008, 02:17 PMmankvill
- June 29th 2008, 02:21 PMJhevon
- June 29th 2008, 02:23 PMmankvill