Mathematics
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OpenStudy (anonymous):
question inside :)
will be attached... same with answer choices :)
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OpenStudy (anonymous):
PROBLEM!!! :)
OpenStudy (anonymous):
answer choices A,B,C,D from top to bottom :)
OpenStudy (sirm3d):
third from top
OpenStudy (anonymous):
can u pls explain? :) and which one do u mean?? A,B,C,or D??
jimthompson5910 (jim_thompson5910):
the first 3 have something in common (look at the degrees of the denominator)
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hartnn (hartnn):
know what domain is ?
OpenStudy (anonymous):
idk really :( can y'all please exlapin?? :) and idk what they have in common :(
jimthompson5910 (jim_thompson5910):
they have exponents of ___
OpenStudy (anonymous):
2?
jimthompson5910 (jim_thompson5910):
since they all involve subtraction, this means that that each of the first 3 have 2 vertical asymptotes
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jimthompson5910 (jim_thompson5910):
but what's given is just one vertical asymptote
OpenStudy (anonymous):
okay but what does that mean?
OpenStudy (anonymous):
my answer is D?
OpenStudy (anonymous):
since the other 3 have 2 vertical asymptotes?
jimthompson5910 (jim_thompson5910):
it says that there is exactly 1 vert asymptote, but the first 3 have 2 vert asymptotes, so the first 3 must be ruled out because of this discrepancy
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OpenStudy (anonymous):
kk so my answer is D?? the one i attached??
jimthompson5910 (jim_thompson5910):
yes
hartnn (hartnn):
it may be possible that one of the 2 vertical asymptotes are given, its not written that ' there is exactly 1 vert asymptote'
OpenStudy (anonymous):
okay thanks!! :) ahha :)
hartnn (hartnn):
plus domain does not contain -3 , but domain of 4th contains -3
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jimthompson5910 (jim_thompson5910):
true, i guess the domain paints a more definitive picture
jimthompson5910 (jim_thompson5910):
oh didn't even see the +-...my bad lol
hartnn (hartnn):
so looking at the domain, which does not contain +3 or -3,
the denominator will be x^2-9
OpenStudy (anonymous):
so my answer is C?
hartnn (hartnn):
finally, yes!
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OpenStudy (anonymous):
haha kkk thanks :)
hartnn (hartnn):
haha kkk welcome :)
OpenStudy (anonymous):
:)
OpenStudy (sirm3d):
i agree with @hartnn