Mathematics
22 Online
OpenStudy (anonymous):
solve the equation
(8/7)^3=343/512
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OpenStudy (alexandervonhumboldt2):
\[(\frac{ 8 }{ 7 })^3=\frac{ 343 }{ 512 }\]
this is not an equation
OpenStudy (alexandervonhumboldt2):
this is a false statement
OpenStudy (alexandervonhumboldt2):
because (8/7)^3 is not 343/512
OpenStudy (anonymous):
the answers provided are
A. {-1/3}
B. {1/3}
C. {-3}
D. {3}
OpenStudy (owlcoffee):
Please recheck if you have well written the problem.
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OpenStudy (anonymous):
yup,agree with @AlexandervonHumboldt2
this is not an equation but it is a false statement
pls check ur question again
OpenStudy (anonymous):
(8/7)^x=343/512
OpenStudy (alexandervonhumboldt2):
this is better
OpenStudy (alexandervonhumboldt2):
\[(\frac{ 8 }{ 7 })^x=\frac{ 343 }{ 512 }\]
OpenStudy (alexandervonhumboldt2):
look:
7^3=343
8^3=512
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OpenStudy (alexandervonhumboldt2):
a^{-b}=1/(a^b)
OpenStudy (anonymous):
\[(\frac{ 8 }{ 7 })^x=\frac{ 7^3 }{ 8^3 }\]
OpenStudy (alexandervonhumboldt2):
oh yeah marc wrote this correctly
OpenStudy (anonymous):
thnx @AlexandervonHumboldt2 :)
OpenStudy (alexandervonhumboldt2):
your exponent should be negative
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OpenStudy (alexandervonhumboldt2):
Negative Power Rule:
x^{-a}=1/(x^a)
OpenStudy (anonymous):
:D I actually have no idea. I was asking for my friends little sister. Thanks a bunch.
OpenStudy (anonymous):
\[Example,(\frac{ 1 }{ 2 })^t=(\frac{ 2 }{ 1 })^{-t}\]
OpenStudy (alexandervonhumboldt2):
\[(8/7)^{x}=1/\frac{ 512 }{ 343 }\]
OpenStudy (anonymous):
\[(\frac{ 8 }{ 7 })^x=(\frac{ 1 }{ \frac{ 343 }{ 512 } })^{-1}\]
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OpenStudy (alexandervonhumboldt2):
yeah
OpenStudy (anonymous):
Thanks she understands the problem now.
OpenStudy (anonymous):
yw