What is "x" in [ln(3-8x)= -4]?

4 ⤊

2007-11-28 08:47:38 · 3 answers · asked by RK 2 in Science & Mathematics ➔ Mathematics

(3 - 8x) = e^(-4)
8x = 3 - e^(-4)
8x = 2.982
x = 0.373

2007-11-28 10:17:56 · answer #1 · answered by Como 7 · 2⤊ 1⤋

ln [3 - 8x] = -4
raise to e-power
[3 - 8x] = e^-4
-8x = (e^-4) - 3
x = - [(e^-4) - 3]/8

2007-11-28 16:52:01 · answer #2 · answered by Jim L 3 · 1⤊ 1⤋

3 - 8x = e^(-4)

[3-e^(-4)]/8 = x

2007-11-28 16:50:54 · answer #3 · answered by KEYNARDO 5 · 1⤊ 0⤋