Ask
your own question, for FREE!
Mathematics
12 Online
Solve for x: (9/7)log base 2 of x = -9
Still Need Help?
Join the QuestionCove community and study together with friends!
First get the log function by itself: \[\frac {7}{9}*\frac {9}{7} *\log_{2}(x)=\frac{-9}{1}*\frac {7}{9}\]
i got it. the answer is 1/128
Good. Out of curiousity did you use a calculator or convert to base ten logs first?
Since the problem can be translated to \[\log_{2} x^{9/7}=9\]. I changed it to exponential form and got \[2^{9} = x^{9/7}\]
then i got rid of the exponents by raising them to the reciprocal of that 9/7 and got (2^-7)=x and simplified
Still Need Help?
Join the QuestionCove community and study together with friends!
Very nice - I like your method more. :-)
Thank you.
Just as it should be solved, exploit those log rules!! ;)
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
Countless7Echos:
I don't know just no sketch doodle day :p finished a video already so I'm pretty
Ferrari:
Depression Hi, it's me, Jordan (ferrari). It's supposed to be the Fourth of July but I feel kinda depressed and mad at myself for no reason.
Countless7Echos:
mmm I forgot to post but hey first time trying out hyperpop art :3 super fun TW:
RAVEN69:
The hole You can't fix the hole in my heart. It's permanent. It's been broken to many times and I love it every time.
5 hours ago
9 Replies
2 Medals
6 hours ago
12 Replies
1 Medal
1 day ago
9 Replies
5 Medals
2 days ago
0 Replies
0 Medals