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Mathematics 28 Online
OpenStudy (anonymous):

If nx + 7 = 8 while kx - 7 = 10, what is the value of n/k?

OpenStudy (asnaseer):

get an expression for nx from the first equation then get an expression for kx from the second equation then divide one by the other

OpenStudy (asnaseer):

does that make sense?

OpenStudy (anonymous):

yeah i got the answer 1/17

OpenStudy (asnaseer):

perfect! :)

OpenStudy (zzr0ck3r):

do we assume x != 0?

OpenStudy (asnaseer):

I would think so.

OpenStudy (zzr0ck3r):

maybe make a note saynig x != 0

OpenStudy (asnaseer):

depends on what "level" of maths you are studying at @lawls

OpenStudy (zzr0ck3r):

o wait it cant be because nx would not equal 1

OpenStudy (asnaseer):

true - x=0 would not satisfy either equation - so it not a viable answer.

OpenStudy (zzr0ck3r):

word

OpenStudy (asnaseer):

hope we haven't confused you @lawls :)

OpenStudy (zzr0ck3r):

yeah just dont read my first remark or beyond:)

OpenStudy (zzr0ck3r):

unless you want to kiss your teachers but:)

OpenStudy (anonymous):

it's ok guys. it's only a sat level question.

OpenStudy (asnaseer):

ok - thats good, you can ignore the discussions about x=0 then. :)

OpenStudy (asnaseer):

unless you're actually interested in knowing why it was brought up by @zzr0ck3r ?

OpenStudy (anonymous):

no that's ok lol

OpenStudy (asnaseer):

:)

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