i don't know if i did this problem right. can someone help me w/ it?
log (little 3 at bottom) (2x+1)=4
is the answer 40? cause thats what i got.
2007-11-04 07:02:27 · 8 answers · asked by Hannah B 1 in Science & Mathematics ➔ Mathematics
log (little 3 at bottom) (2x+1)=4
This is same as 3^4 = 2x+1
81 = 2x+1
80 = 2x
40 = x
Correctomondo!!
2007-11-04 07:08:28 · answer #1 · answered by ironduke8159 7 · 0⤊ 0⤋
What is the "(little 3 at the bottom"?
Becuase if that has not part to the equation,
2x+1=4
-1 -1
2x = 3
x= 3/2
2007-11-04 07:08:44 · answer #2 · answered by Miss Madeline 3 · 0⤊ 0⤋
I don't know what you meant by the log thing but the answer to (2x+1)=4 is not 40... you subtract 1 from both sides making it 2x=3 and then you divide by 2 to both sides making x=3/2 make sense??
2007-11-04 07:06:00 · answer #3 · answered by ErHead 3 · 0⤊ 1⤋
ok. i'm assuming you recognize common log residences. once you have have been given log subtraction with the comparable base, this is going to become branch. So, you will finally end up with: log(base 2) (x+4/x-3)=3 Now, via changing the equation into common exponent kind, you may get: 2^3=x+4/x-3 8=x+4/x-3 8x-24=x+4 7x=28 x=4
2016-10-15 00:44:19 · answer #4 · answered by ? 3 · 0⤊ 0⤋
log[3](2x+1) = 4
raise both sides to 3:
3^{log[3](2x+1)} = 3^4 = 81
2x+1 = 81
2x = 80
x = 40
2007-11-04 07:08:09 · answer #5 · answered by kellenraid 6 · 0⤊ 1⤋
yes that is the answer i got to.
2007-11-04 07:06:44 · answer #6 · answered by Kara 1 · 0⤊ 1⤋
it probably could be
post your question in the math category
2007-11-04 07:06:38 · answer #7 · answered by Anonymous · 0⤊ 2⤋
i think so
2007-11-04 07:05:25 · answer #8 · answered by maxk222 1 · 0⤊ 1⤋