SOLUTION: Solve the following equation: 220 X 4^(-0.02t) = 1540

Question 635638: Solve the following equation:
220 X 4^(-0.02t) = 1540
Answer by unlockmath(1688) (Show Source): You can put this solution on YOUR website!
Hello,
This 220 X 4^(-0.02t) = 1540
We first divide by 220
4^(-0.02t) = 7
Rewritten as log we get:
Log base 4 7=-0.02t
Divide by -.02
(Log base 4 350)/-0.02 = t
Using scientific calculator we get:
t=-70.184 (rounded off)
Make sense?
RJ
www.math-unlock.com
RELATED QUESTIONS
Solve the following exponential equation.... (answered by jsmallt9)

Please solve the following quadratic equation for x: {{{ x^2-5x-4=0... (answered by josh_jordan)

Solve the following equation: x^3+x^2+2x-4=0. Show your... (answered by stanbon)

Solve the following polynomial equation. show your work.... (answered by Boreal)

Solve the following equation:... (answered by richard1234)

Solve the following quadratic equation by completing the square. X^2+ 4x - 4 = 0 (answered by jim_thompson5910)

Solve the following equation for X by using the quadratic formula. 4x^2+2x-4=0 (answered by solver91311)

solve the following equation by completing the square x(squared)... (answered by ankor@dixie-net.com)

Im trying to solve this equation with the following pairs. x=-5... (answered by rfer)