Monday

December 22, 2014

December 22, 2014

Posted by **Shellie** on Sunday, July 26, 2009 at 7:08pm.

- Pre Calculus -
**MathMate**, Sunday, July 26, 2009 at 7:37pmTime required = 30 seconds * log(0.05)/log(0.5)

= 129.7 seconds

- Pre Calculus -
**Shellie**, Sunday, July 26, 2009 at 8:03pmThanks...

**Answer this Question**

**Related Questions**

Math - Exponential Decay - Radium decays exponentially. Its half-life is 1,690 ...

Calculus - Radius decays at a rate of that is proportional to its mass, and has...

Chemistry - Radium-223 has a half-life of 11.4 days.Approximately how long would...

Calculus - Ba has a half-life of 283.2 hours. How long would it take for the 50 ...

Chem 3A - please help me with this chemistry problem. Half-Life A radium-226 ...

chemistry - How long will it take for 25% of the C-14 atoms in a sample of C-14 ...

Calculus-Modeling Equations - An unknown radioactive element decays into non-...

chemistry - A radium-226 sample initially contains 0.112mol. How much radium-226...

math - The half life of iodine - 131 is 8 days. How long will it take for 7/8 of...

Math - The half-life of strontium-90 is 28 years. How long will it take a 60 mg ...