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newatthisBest ResponseYou've already chosen the best response.1
dw:1370239174862:dw
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
Hi I got the answer of 7/2√5 but when I do it I get something different.
 10 months ago

yummydumBest ResponseYou've already chosen the best response.1
okay so lets write that a little prettier to deal with:\[{{1\over2}\sqrt{5}}\times{1~{1\over2}\sqrt{20}}~~\implies~~{{1\over2}\sqrt{5}}\times{{3\over2}\sqrt{20}}~~\implies~~{\sqrt{5}\over2}\times{3\sqrt{20}\over2}\]now that that looks a little better, let's solve:\[{{\sqrt{5}\times3\sqrt{20}}\over2}={3\sqrt{100}\over2}\]because 5 x 20 = 100\[3(10)\over2\]i think you've got it from here :)
 10 months ago

yummydumBest ResponseYou've already chosen the best response.1
oh i meant to write \[3(10)\over4\]sorry
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
I'm a bit lost I have to simplify this so would'nt 1 1/2√20 be 2 3/2√5
 10 months ago

yummydumBest ResponseYou've already chosen the best response.1
\[1 {1\over2} = {3\over2}\]\[\sqrt{20}= 2\sqrt{5}\]\[{3\over2}\times{2\over1}\sqrt{5}~~=~~{3\over\cancel{2}}\times{\cancel{2}\over1}\sqrt{5}~~=~~\large3\sqrt{5}\]
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
but the answer comes out to \[\frac{ 7 }{ 2 }\sqrt{5}\]
 10 months ago

yummydumBest ResponseYou've already chosen the best response.1
and where are you getting this from?
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
Our teacher placed the answer as \[\frac{ 7 }{ 2 }\sqrt{5}\]
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
I didn't get this answer either this is why it's confusing
 10 months ago

yummydumBest ResponseYou've already chosen the best response.1
1/2 times 3/2 = 3/4 sqrt 5 times sqrt 20 = sqrt100 = 10 3/4 times 10 = 7.5 i dont know what your teacher was doing, maybe you copied the question wrong
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
No it's printed on my paper
 10 months ago

yummydumBest ResponseYou've already chosen the best response.1
then im really not sure
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
I appreciate your help Thank you yummydum
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
I got as my final answer \[\frac{ 3 }{ 4 }\sqrt{5} \] this is why it was confusing
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
I had a person help me don't I don't believe it's correct here is why unless I'm wrong
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
Alright so i read the whole problem. Where are you stuck? We should get 15/2.
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
\[1\frac{ 1 }{ 2 }\sqrt{20}\] would be \[\frac{ 3 }{ 2 }\] and \[\sqrt{20} would be 2\] add both \[2\frac{ 3 }{ 2 }\sqrt{5}\]
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
teacher has an answer of \[\frac{ 7 }{ 2 }\sqrt{5}\] could the teacher be wrong
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
Yes. Teacher added the sqrt5 by misatke. Or maybe the question you wrote is incorrect.
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
question is multiply and simplify \[\frac{ 1 }{ 2 }\sqrt{5}\left( 1\frac{ 1 }{ 2 } \sqrt{20}\right)\]
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
dw:1370243682678:dw
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
Why is this so complicated? I'm lost
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
Which step is it that you don't understand?
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
how would I multiply \[\frac{ \sqrt{5} }{ 2 }\times \frac{ 3*2 }{ 2 }\sqrt{5}\] I thought you multiply numbers not square roots with numbers
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
my answer was \[\frac{ 3 }{ 4 }\sqrt{5}\] maybe this is wrong
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
dw:1370244388921:dw
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
Wouldn't we keep the root? and just multiply getting \[\frac{ 15 }{ 2 }\sqrt{5}\]
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
No ma'am. Whenever it's given: sqrt3 * sqrt3 we will get "3" as answer. The roots cancel out leaving you with ONE three.
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
This is how I started \[\frac{ 1 }{ 2 }\sqrt{5}(1\frac{1 }{ 2 }\sqrt{20})\] \[\frac{ 1 }{ 2 }\sqrt{5}(\frac{3 }{ 2 }\sqrt{5})\] \[\frac{ 1 }{ 2 }\times \frac{ 3 }{ 2 }=\frac{ 3 }{ 4 }\sqrt{5}\] I know this isn't corrected but I get this
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
How will you simplify sqrt 20?
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
that's right it would be 4*5 which 4 goes down to 2 so it would be \[2\sqrt{5}\]
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
I forgot to add that \[\frac{ 1 }{ 2 }\sqrt{5}(2\frac{3 }{ 2 }\sqrt{5})\] it would be this correct and mix fractions to improper fractions would be \[2\frac{ 3 }{ 2 } would be \frac{ 7 }{ 2 }\] \[\frac{ 1 }{ 2 }\sqrt{5}(\frac{ 7 }{ 2 }\sqrt{5})\]
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
You made a mistake again. :P It's not 2 3/2
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
so it's \[\frac{ 2 }{ 1 }X\frac{ 3 }{ 2 }\]
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
No. I think you should redo the problem. Show me yor steps please.
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
\[\frac{ 1 }{ 2 }\sqrt{5}(1\frac{ 1 }{ 2 }\sqrt{20})\] \[\frac{ 1 }{ 2 }\sqrt{5}(\frac{ 3 }{ 2 } 2\sqrt{5})\] \[\frac{ 1 }{ 2 }\sqrt{5}(\frac{ 3 }{ 2 } 2\sqrt{5})\] at this point I'm lost
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
Awesome. No the 2's on right cancels out. Right?
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
why would it cancel √20 would be 2√5 this is where I'm getting confused
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
is 2 canceling with the other 2
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
sqrt(20) = sqrt(2*2*5) = 2 sqrt5 Agree?
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
Now the 2 from 2sqrt5 and the w in the denominator on the right canel out
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
I'm with you on that
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
Right o what are we left with now?
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
Right. And that is multiplied with..?
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
\[\frac{ 1 }{ 2 }\sqrt{5}\]
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
Right now multiply it out.
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
\[\frac{ 1 }{ 2 }\sqrt{5}\times \frac{ 3 }{ 1 }\sqrt{5}\] Is this looking correct?
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
\[\frac{ 3 }{ 2 }\sqrt{5}\]
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
do I take of the √ and make it \[\frac{ 3 }{ 2 }\times \frac{ 5 }{ 1 }=\frac{ 15 }{ 2 }\]
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
Thanks for everything wow :.)
 10 months ago

help123please.Best ResponseYou've already chosen the best response.1
Good job helping @newatthis !!! @saifoo.khan
 10 months ago

help123please.Best ResponseYou've already chosen the best response.1
Kudos to @yummydum too!
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
@yummydum is useless.
 10 months ago

help123please.Best ResponseYou've already chosen the best response.1
No she isn't :p
 10 months ago

help123please.Best ResponseYou've already chosen the best response.1
Yummydum isn't. Or you,for that matter.
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
Thanks for everything it helps a lot when someone knows how to guide and explain it. :)
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
@help123please. believe me. I know her. @newatthis You're welcome. :)
 10 months ago

help123please.Best ResponseYou've already chosen the best response.1
Well,yes...you've been here longer than me.
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
Lol. But no doubt she has a brown brain like me! D:
 10 months ago

help123please.Best ResponseYou've already chosen the best response.1
Yours is a great brain,Saif.
 10 months ago

help123please.Best ResponseYou've already chosen the best response.1
U ARE 2 HELPFUL. Lol.
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
And it's brown too!
 10 months ago

help123please.Best ResponseYou've already chosen the best response.1
Nope it's not.
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
I'm brown. Brain is brown too. Dummy is brown too. Hence she has a brown brain too.
 10 months ago

help123please.Best ResponseYou've already chosen the best response.1
We're prolly weirding @newatthis out. Or at least,I am.
 10 months ago

help123please.Best ResponseYou've already chosen the best response.1
'Hence,she has a brown brain too'. Hence. I like that word.
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
no I'm just doing math working my brain, or whatever is left. :)
 10 months ago

help123please.Best ResponseYou've already chosen the best response.1
Saif,I just noticed your smartscore is mine,with the numbers flipped upside down. XD
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
Haha. Nice catch.
 10 months ago

help123please.Best ResponseYou've already chosen the best response.1
*Flips PC upside down* OMGEE I HAVE A 99 SS!
 10 months ago

help123please.Best ResponseYou've already chosen the best response.1
98% of the time,when typing lol,you're not actually laughing. Did u know? :P
 10 months ago

saifoo.khanBest ResponseYou've already chosen the best response.3
Make that 99%. I love laughing. It helps in exercising my face muscles. :P
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
so new question? \[2x \sqrt{7}(3x \sqrt{7})\] \[2x(3x)\sqrt{7}\sqrt{7}\] \[6x(\sqrt{49})\] Would this be correct?
 10 months ago

newatthisBest ResponseYou've already chosen the best response.1
sorry I just threw this in here
 10 months ago

help123please.Best ResponseYou've already chosen the best response.1
@newatthis please close this post and create a new thread.
 10 months ago

yummydumBest ResponseYou've already chosen the best response.1
2x * 3x = 6x^2 not just 6x and √49 = 7 so now you have 6x^2 * 7 ....which is?
 10 months ago
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