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anonymous
 5 years ago
I need someone to just check my work... and tell me where I went wrong?
anonymous
 5 years ago
I need someone to just check my work... and tell me where I went wrong?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The problem is 2^x+3=5x

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0next step: (x+3)ln2/xln2=xln5/xln2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0next step: x+3/x=ln5/ln2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0next step: x+3/x=2.322/1

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Something is wrong. Was the original equation \[2^{x+3} = 5^x\] ?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Ok, then when you take the ln of both sides you'll have ln5 + lnx on the right hand side of the equal.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Which is gonna be a pain.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Was it \[2^{x+3} = 5x\] ?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Yeah, there's no good way to simplify that. I suspect you have the question wrong.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Best you can do is something like \[x(ln 2)  lnx = ln(5/3)\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Err wait, that should be ln(5/8) on the right side.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0My teacher told us to set each side to the natural... which gave me: (x+3)ln2=xln5

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Then I needed to get everything canceled out by cross multiplying... so I divided both sides by xln2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0That's not right though. Unless you had 5^x on the right side originally.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Was it \(5x\) or \(5^x\)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the second one... I just looked in my book. Im so sorry

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So yeah that's right. take the ln of both sides (or any log really)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Then solve for x. Don't plug anything into your calculator until you have something where x = something that has no x

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0(x+3)ln2=xln5 is correct for starting out

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok... then what do I need to divide both sides by? she taught us to cross multiply? I divided both sides by xln2 just to cancel out. And I ended up with x+3/x=ln5/ln2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Get all terms with an x on one side.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Or that. Cross multiplying works fine

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I usually multiply out products, but you don't need to here

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Just be sure that you do (x+3)/x = ln5/ln2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I did and I got: x+3/x= 2.322/1

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Don't plug things in.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Keep solving the equation until you have x by itself. x = something that has no x.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Im not sure what/where.I am attempting to get x by itself? I thought that is what I was doing?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I think cross multiplying is just making this harder.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I just got a different answer of 4.425

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Ok..Im just trying to follow the instructions. But Im willing to try anything at this point

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[(x+3)ln2=xln5\] \[x(ln2)+3(ln2)=x(ln5)\] \[x(ln2) x(ln5)=  3(ln2)\] \[x[(ln2) (ln5)]=  3(ln2)\] \[x= \frac{ 3(ln2)}{(ln2) (ln5)}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Thanks for your time.. I appreciate it. I will continue to search for the answer. I need to learn it the way she taught us, Im afraid I will be jumping the gun and not learning anything... thanks so much.
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