Mathematics
12 Online
OpenStudy (anonymous):
help
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OpenStudy (anonymous):
OpenStudy (anonymous):
@Luigi0210
OpenStudy (luigi0210):
Multiply by the radical in the first one.
OpenStudy (luigi0210):
\[\frac{ 2 }{ \sqrt{5} }*\frac{ \sqrt{5} }{ \sqrt{5} }=\frac{ 2\sqrt{5} }{ \sqrt{25} }=..?\]
OpenStudy (anonymous):
@Luigi0210 i think i got it! a?
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OpenStudy (luigi0210):
nope :/
OpenStudy (anonymous):
@Luigi0210 ughh! D
OpenStudy (luigi0210):
There you go :P
OpenStudy (anonymous):
@Luigi0210 woo! & as for 5...
OpenStudy (luigi0210):
Ha, well for that one we need to find factors.. so what numbers multiply to 112?
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OpenStudy (anonymous):
@Luigi0210 1,2,4,7,8,14,16,28,56 and 112??
OpenStudy (luigi0210):
^_^'
Let's numb it down.. what multiplies with 7 to give you 112?
OpenStudy (anonymous):
@Luis_Rivera 16?
OpenStudy (anonymous):
@Luigi0210
OpenStudy (anonymous):
@Luigi0210 A?
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OpenStudy (luigi0210):
There you go again with Luis D:
and correct, so now we can rewrite it as \[-11\sqrt{7*16}\]
Now, what is the square root of 16?
OpenStudy (anonymous):
sorry! & is the answer A?
OpenStudy (anonymous):
@Luigi0210
OpenStudy (luigi0210):
Haha, I'm just messing with you :)
and correct again
OpenStudy (anonymous):
@Luigi0210 thanks! can you check my answer for 8 & help with 7?
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OpenStudy (anonymous):
is 7 B?
OpenStudy (luigi0210):
Open a new question cause I gtg.. I'll brb later sorry bud.
Ask for loser66 and say I sent him to help :P
OpenStudy (anonymous):
@luig
OpenStudy (luigi0210):
And for the first you multiply by the conjugate. the second is a triangle problem
OpenStudy (luigi0210):
actually nvm I got a few more mins
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OpenStudy (anonymous):
@Luigi0210 is the first answer B, & the second C?
OpenStudy (anonymous):
Hang on. I can help with number 8 if you need it?
OpenStudy (luigi0210):
you are correct on the first on
OpenStudy (luigi0210):
*one
OpenStudy (anonymous):
@Luigi0210 so is the second B? & @DoYourHomework sure!
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OpenStudy (luigi0210):
Ha, if you're playing the guessing game then are god
OpenStudy (luigi0210):
*good
darn typing errors -_-
OpenStudy (anonymous):
|dw:1370144789860:dw|
OpenStudy (anonymous):
We are trying to find d.
OpenStudy (anonymous):
lol :) @Luigi0210 @DoYourHomework is it b?
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OpenStudy (luigi0210):
What @DoYourHomework is showing is correct.
OpenStudy (anonymous):
Use pythagorean
\[d = \sqrt((5l)^2+l^2)\]
\[d=\sqrt(26l^2) = \sqrt(l^2)\sqrt(26) = lsqrt(26)\]
OpenStudy (anonymous):
OH
OpenStudy (anonymous):
Got it? Haha :D
OpenStudy (luigi0210):
|dw:1370144928469:dw|