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Mathematics 12 Online
OpenStudy (anonymous):

help

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?

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?

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?

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?

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

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!

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?

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|

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