Ask your own question, for FREE!
Mathematics 8 Online
OpenStudy (boobear7411):

Can someone help ?

OpenStudy (boobear7411):

OpenStudy (anonymous):

do you know what rationalizing the denominator means?

OpenStudy (boobear7411):

nope @Tomas.A

OpenStudy (anonymous):

Well as you should know square over some number means that it will be irrational, so you should remove square from denominator. How to do that? Well I hope you know that \[\sqrt{2}\times\sqrt{2}=\sqrt{2\times2}=\sqrt{2^2}=2\] use same principle, you can multiply denominator and numerator by same number

OpenStudy (boobear7411):

. . . and then ? @Tomas.A

OpenStudy (anonymous):

when you do that it will be rationalized

OpenStudy (boobear7411):

i have no idea what youre talking about im sorry im really confused @Tomas.A

OpenStudy (anonymous):

multiply denominator and numerator by \(\sqrt{30}\)..

OpenStudy (boobear7411):

whats the numerator and denominator ? @Tomas.A

OpenStudy (anonymous):

\[\frac{this\ is \ numerator}{this\ is\ denominator}\]

OpenStudy (boobear7411):

i know . . but in the problem @Tomas.A

OpenStudy (anonymous):

\(4\sqrt{6}\) is numerator in your problem and \(\sqrt{30}\) is denominator

OpenStudy (boobear7411):

53.6 ? ? ? and 30 ??? @Tomas.A

OpenStudy (anonymous):

i dont know whats that

OpenStudy (boobear7411):

ugh. i have no idea how to do this .

OpenStudy (anonymous):

\[\frac{4\sqrt{6}\times\sqrt{30}}{\sqrt{30}\times\sqrt{30}}=\frac{4\sqrt{6}\times\sqrt{5\times6}}{30}=\frac{4\times6\sqrt5}{30}=\frac{24\sqrt5}{30}=\frac{4\sqrt5}{5}\]

OpenStudy (boobear7411):

That would be the answer ?

OpenStudy (anonymous):

yeah..

OpenStudy (boobear7411):

can i say something ?

OpenStudy (anonymous):

yes

OpenStudy (boobear7411):

I love you . thank you. life saver. @Tomas.A

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!