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Mathematics 16 Online
OpenStudy (anonymous):

Now im really confused

OpenStudy (anonymous):

OpenStudy (anonymous):

Try applying the rule of division: x/y=x*(1/y)

OpenStudy (anonymous):

hmmm

imqwerty (imqwerty):

If we are given (a/b) /(c/d) we can say that we have - a/b x d/c

OpenStudy (anonymous):

All together i would get 1/60 but that is not an answer choice

OpenStudy (phi):

notice this idea: \[ \frac{ \frac{1}{2}}{\frac{5}{8} } \] multiply top and bottom by the same thing: 8/5 \[ \frac{ \frac{1}{2}\cdot \frac{8}{5}}{\frac{5}{8}\cdot \frac{8}{5} } \] now simplify top and bottom

OpenStudy (phi):

the bottom becomes 1 and dividing by 1 can be ignored. we just have the top (simplified)

OpenStudy (anonymous):

4/5

OpenStudy (phi):

yes. the idea I posted is usually simplified to the rule multiply the top by the "flipped" bottom

OpenStudy (anonymous):

wow thank you im taking notes right now

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