Friday

March 6, 2015

March 6, 2015

Posted by **Anonymous** on Sunday, April 15, 2012 at 7:34pm.

3^(2a+3)=7^(a-4)

Please Help and Thank you

- Math 12 (Logs) -
**Henry**, Tuesday, April 17, 2012 at 7:58pm3^(2a+3) = 7^(a-4).

(2a+3)*Log3 = (a-4)*Log7.

Divide both sides by Log3:

2a+3 = 1.771(a-4).

2a+3 = 1.771a-7.085.

2a-1.77a = -7.085-3.

0.23a = -10.085.

a = -43.85.

**Answer this Question**

**Related Questions**

math logs - solve 3^(2x+1) = 9^(2x-1) using base 3 logs

Math - Logs are stacked up in apile as shown in the figure. The top row has 15 ...

solving for x math - 2e^(4x^2)=3 how do i solve for x. do i use the ln methode ...

math - natural logs - Find the EXACT solution to e^(1-x) = 4^x You must use logs...

natural logs - solve for x. xe^x = 9 please help i am stuck. i keep going in ...

Exponents and Logs (Math) - Solve for x: 2^(-x+1) = 4(8^x) I try isolating the 4...

math - solve with logs 3^(1-2x)=4^(x)

math - how do i solve these logs? log1/2 (3x+1)^1/3= -2 3^(x^3)= 9^x

math- logarithms - how do i solve these logs? log1/2 (3x+1)^1/3= -2 3^(x^3)= 9^x

math - how do you solve for x using logs: [(a + b)^x]/b^x I am not sure of the ...