Wednesday

April 16, 2014

April 16, 2014

Posted by **D.S.** on Monday, April 9, 2012 at 1:57am.

So what I've done is rewritten it as:

(3x-7)ln10e = ln5

Now I'm a little lost as to what to do next...

- Math -
**Momito**, Monday, April 9, 2012 at 2:51amFind the value of in10 and in5

multiply the value of in10 wit the varables in the brackets

collect the like terms i.e live the varable with the x term on the left hand side and the others on the right

then solve for x from there.

Goodluck

- Math -
**Reiny**, Monday, April 9, 2012 at 8:42amYour start was incorrect...

the exponent does not apply to the 10, only to the base of e

so ...

e^(3x-7) = 5/10= .5

now take ln of both sides

(3x-7) ln e = ln .5 , but ln e = 1

3x-7 = ln .5

3x = 7 + ln .5

x = (7 + ln .5)/3 , and it is button-pushing time

**Related Questions**

Astronomy - The hottest stars have surface temperatures of about 40,000 K. At ...

math - Solve the system by substitution. 3x-3y=-12,y=-3x-12 i see its the same ...

Math(Thank you for your help) - 1/[N2O] = 1/(1.75M) + (1.10E-3M^-1 S^-1)(1852s...

Calculus - evaluate (integral) xe^2x dx A. 1/6x^2 e^3x+C B. 1/2xe^2x-1/2e^2x+C C...

Chemistry - 1/[N2O] = 1/(1.75M) + (1.10E-3M^-1 S^-1)(1852s) [N2O] = 0.383 M I ...

Math(Please, please help) - 1/[N2O] = 1/(1.75M) + (1.10E-3M^-1 S^-1)(1852s) [N2O...

Chemisdtry - Lewis Structures (check + help) - Draw Lewis structures for each of...

Chemistry - .50 - x / x = 3.20e-1 I need to solve for x. I was going to do .50 ...

Chemistry(Please check) - .50 - x / x = 3.20e-1 I need to solve for x. I was ...

Physics - A particle of charge +1.00 x 10e-6 C is 15.0 cm distant from a second ...