Solve 85x 61 x 0 If the answer is not an integer enter it
Solve. (8/5)^x - 6^1 -x = 0 If the answer is not an integer, enter it as a decimal rounded to the nearest hundredth, if needed. x =
Solution
(8/5)^x - 6^(1-x) =0
rewriting:
(8/5)^x = 6^(1-x)
taking log on both sides:
ln(8/5)^x = ln(6^(1-x))
x*ln(8/5) = (1-x)ln6
x( ln(8/5) +ln6) = ln6
x= ln(6)/( ln(8/5) +ln6)
= 1.7917/2.2617
x= 0.79
