+0  
 
0
48
1
avatar+1380 

Help.

NotSoSmart  Dec 28, 2017
Sort: 

1+0 Answers

 #1
avatar+80973 
+2

73x  = 400    take the log of both sides

 

log 7 3x  =  log 400      and we can write

 

3x  *  log 7  =  log 400          divide both sides by 3log 7

 

x  =  log (400)  / [ 3log (7)]  ≈ 1.026  =  1.03

 

 

ln  (4)  + ln (3x)  = 2     we can write

 

ln  ( 4 * 3x)  = 2

 

ln (12x )   =  2

 

This says that

 

e^2  =  12x            divide both sides by 12

 

e^2  / 12 =   x   ≈  .615  =  .62

 

 

 

cool cool cool

CPhill  Dec 28, 2017

24 Online Users

avatar
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details