Mathematics
9 Online
OpenStudy (anonymous):
Solve the formula P = 2l + 2w for w
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OpenStudy (zzr0ck3r):
subtract 2l from both sides then tell me what you have
OpenStudy (anonymous):
I think so im really not good in math.
OpenStudy (anonymous):
you can do this. first, subtract 2l from both sides of the equation
OpenStudy (zzr0ck3r):
im telling you to do something.
subtract 2l from both sides of your equation, and then show us what you have.
OpenStudy (anonymous):
lol, go for it zz
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OpenStudy (anonymous):
Is it 0?
OpenStudy (zzr0ck3r):
is what 0?
OpenStudy (jhannybean):
\(\large P-2l=-2l+2l+2w\)
OpenStudy (jhannybean):
simplify.
OpenStudy (jhannybean):
what do you get? whats the right side turn into?
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OpenStudy (anonymous):
6w?
OpenStudy (jhannybean):
what is -2 + 2?
OpenStudy (anonymous):
But these are the answer choices
A. W=P-2l
B. w=p/2l
C. w= 2p/21
D. W= p-21/2
OpenStudy (anonymous):
and -2 + 2? is 0
OpenStudy (jhannybean):
We're going step by step. Not jumping to answers.
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OpenStudy (anonymous):
-2 + 2? is 0
OpenStudy (luigi0210):
Good luck you two!
OpenStudy (jhannybean):
Yes. So you have \(\large P-2l=2w\).Now divide both sides of the equation by 2.
\[\large\frac{P-2l}{2}=\frac{2w}{2}\]\[\large w=\frac{P-2l}{2}\]
OpenStudy (anonymous):
Ummm is it -1p?
OpenStudy (jhannybean):
nope.How did you get that? Explain?
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OpenStudy (anonymous):
I divided -2 by 2
OpenStudy (jhannybean):
why?
OpenStudy (jhannybean):
Oh like that.Compare what we have accomplished to your answer choices.
OpenStudy (jhannybean):
I don't think you need to simplify any more.
OpenStudy (anonymous):
Because of this \[\frac{ p-2 }{ 2 }\]
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OpenStudy (jhannybean):
But these are the answer choices
A. W=P-2l
B. w=p/2l
C. w= 2p/21
D. W= p-21/2
OpenStudy (jhannybean):
So which answer choice do you think fits what we solved for?