100grams of a certain element has decayed to 50 grams in 5 years.Find to the nearest integer the rate of decay
Favorites|Homepage
Subscriptions | sitemap
HOME > Mathematics > 100grams of a certain element has decayed to 50 grams in 5 years.Find to the nearest integer the rate of decay

100grams of a certain element has decayed to 50 grams in 5 years.Find to the nearest integer the rate of decay

[From: ] [author: ] [Date: 11-08-14] [Hit: ]
86% => 14% -........
100 grams of a certain element has decayed to 50 grams in 5 years. Find, to the nearest integer, the rate of decay.

Please show me how to solve this
Best answer gets ten points!!!!

-
fraction remaining = e^kt , so
0.5 = e^5k
5k = ln 0.5
k = ln 0.5/5 = -0.1386 <------------
equivalent to a continuous decay rate of 13.86% => 14% <----------

-
..
1
keywords: the,certain,Find,nearest,integer,100,years,in,element,of,rate,to,decayed,decay,50,has,grams,100grams of a certain element has decayed to 50 grams in 5 years.Find to the nearest integer the rate of decay
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .