There is a error in answer in question 8
http://www.allaboutcircuits.com/worksheets/thev.html
Rth is equal 479.532Ω
For sure not
Rth=2.4KΩ||1KΩ||300Ω
http://www.allaboutcircuits.com/worksheets/thev.html
Rth is equal 479.532Ω
For sure not
Rth=2.4KΩ||1KΩ||300Ω