Thread: PLS HELP...Exponents and Logs

The Richter magnitude, R, of an earthquarge is given by,
R=0.67log(0.37E)+1.46
where E is the energy in kW X h released by the earthquake.

Show that E=2.7 X 10 ^(R-1.46)/0.67

Originally Posted by mathhtam

The Richter magnitude, R, of an earthquarge is given by,
R=0.67log(0.37E)+1.46
where E is the energy in kW X h released by the earthquake.

Show that E=2.7 X 10 ^(R-1.46)/0.67

You have:



so rearrange so that the is on one side and everything else on the other:



By definition if then , so:



and you should be able to finish it yourself from there.

CB