Question

I need some help please? ill show you the work i did can you please show me where i went wrong?

Answer 1

sure :)

Answer 2

\[15\sqrt{10 }* 3\sqrt{8}\] <_____this is the problem i started out with here is the work i did:\[15*3 \] and \[\sqrt{10} * \sqrt{8}\]
I end up with: \[45\sqrt{80}\]
\[45\sqrt{ 4}\sqrt{20}\]
\[45*2\sqrt{20}\]
o realized that i would end up with \[90\sqrt{20}\] which is not one of the possible answers....where did i go wrong?

Answer 3

\[15\sqrt{10} * 3\sqrt{8}\]
\[180 \sqrt(5)\]

Answer 4

Because \[\sqrt{20}\] is the same as

\[2\sqrt{5}\]
so\[90 \times 2\sqrt{5}\]
equals

\[180\sqrt{5}\]

Answer 5

these are the possible answers
\[15\sqrt{80}\]\[15\sqrt{18}\]\[45\sqrt{5}\]\[60\sqrt{5}\]

Answer 6

@some_someone

Answer 7

maybe you wrote/read, the question wrong; cause that is the corrects answer.