Non Math Person needs help

shellsie · 2012-01-25 12:59:07

Hi
Now I know basically nothing about Maths but am working through trying to do a fire engineering report and am doing quite well relying on Year 12 maths that I did YEARS ago.
Please see my problem below. I know that it will be really simple for everyone on this site and sorry to be so basic but I have run out of people to ask and can go no further unless I work this out.
So thanks heaps for any replies
Shellie

It is just the exp that I dont understand.

R slope = R exp (0.069 slope)

So I am trying to work out the R slope.

I know that R on the right side is 3.
And I know that the slope in the brackets is 5.
So what I know is...

R slope = 3 exp (0.069 x 5)
Therefore:
R slope = 3 exp (.345)

Then I am stuck as I dont know what exp stands for.
Any clues?

I am trying to do a fire engineering report and am doing quite well but am stuck at this point.

John E. Franklin · 2012-01-25 13:59:57

Expert
Exponential
Exponent
Expedition
Explanation
Exportation
Explicit
Explain
Exponent Is Most Likely I Guess...
Export
Experience
Expose
Express
Expressive
Expect
Expedient
Expel
Expense (maybe Its Expense, Since It's A Report)
Expert
Explode

shellsie · 2012-01-25 14:19:26

Ok, thanks.
So, that's clear as mud to me....no offence.
So how do I allocate an amount to it?
Sorry for my cluelessness.
Shellie

John E. Franklin · 2012-01-25 15:01:08

Certainly you must have more information than this to offer.
It seems out of context.
Without more to read, or more that you were trained,
I can't see completing what you want.
Maybe someone else can do better though.
Either get more info for me, or wait for another user.

bobbym · 2012-01-25 16:52:02

Hi shellsie;

I am getting this far:

R slope = 4.235969759002977

Is R and slope 2 variables? Or is that 1 variable called Rslope?

shellsie · 2012-01-25 17:33:49

Thanks for your reply
Rslope is one variable. And slope in the brackets is 5
So could you tell me how you worked out your answer.
I have no idea what to do with the exp
Thanks for your time
Shell

John E. Franklin · 2012-01-25 17:42:48

I noticed that 3 times inverse ln(.345) gets bobbys answer.
That is also 3 times 2.71828**0.345 where ** mean "raise to the power of".
e = 2.71828....
The log base e is the natural log or "ln" on a calculator.
But e raised to a power is done with inverse or 2nd function and then
press the "ln" key.
So 0.345, press inverse ln key and get 1.4119899.
Then multiply 1.4119899 by 3 for bobbys answer.

I don't know what this is all about and I don't support the answer,
but I am just trying to explain the number bobby has.

shellsie · 2012-01-25 18:12:25

Both of you guys are absolute stars.
Thankyou, thankyou, thankyou.
Now I can go forward.
Just as you sent the answer through a friend rang and he also backed up the answer.
Thanks again
Shell

anonimnystefy · 2012-01-25 21:43:05

well JEF is a Star Member

bobbym · 2012-01-26 02:10:46

Hi shellsie;

Your welcome if I actually did something useful.

Math Is Fun Forum

#1 2012-01-25 12:59:07

Non Math Person needs help

#2 2012-01-25 13:59:57

Re: Non Math Person needs help

#3 2012-01-25 14:19:26

Re: Non Math Person needs help

#4 2012-01-25 15:01:08

Re: Non Math Person needs help

#5 2012-01-25 16:52:02

Re: Non Math Person needs help

#6 2012-01-25 17:33:49

Re: Non Math Person needs help

#7 2012-01-25 17:42:48

Re: Non Math Person needs help

#8 2012-01-25 18:12:25

Re: Non Math Person needs help

#9 2012-01-25 21:43:05

Re: Non Math Person needs help

#10 2012-01-26 02:10:46

Re: Non Math Person needs help

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