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Need to solve for r in this problem, ln stands for natural log

1800=-5000ln r

 Jan 4, 2017
 #1
avatar+259 
0

ln(x) = y

x = e^y

 

-5000ln(r) = 1800.   I  / -5000

 

ln(r) = 1800 / -5000

 

r = e^(1800/-5000)

 

r = e^-0.36

 

r = 1/(e^0.36)

 

I think. Im not 100 sure about the answer

 Jan 4, 2017
 #2
avatar+37146 
+5

1800 / -5000 = ln r

-.36 = ln r

e^(-.36) = r

r = .69768           Yep, Amnesia had it correct !

 Jan 4, 2017

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