Ask
your own question, for FREE!
Mathematics
33 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
SnowyBreaks:
what's your guy's thoughts on the supposedly "alien" thing"?
scarlxrd0412:
yo chat i'm writing another song I need some feedback on the lyrics. Drifting fee
Luna34:
Poem of the day: We wait... The world is not a gentle place, Beneath its smile, a fractured face.
gelphielvr:
(creative) I need to make a poster for an imaginary job. Does anyone have any ide
danielfootball123:
Does anyone know why this is happening and how to fix the problem. I don't need y
xXAikoXx:
Activity: Business E-mail Write a business email for the following scenario. Pretend that you are the administrative assistant for the marketing department
xXAikoXx:
A fiction book's main ideas involve the ____. A. a character's conflict or problem B.
xXAikoXx:
What needs to be done before choosing and reading a book? A. Make sure it is nonfiction.
3 hours ago
19 Replies
1 Medal
50 minutes ago
6 Replies
1 Medal
6 hours ago
9 Replies
1 Medal
27 minutes ago
7 Replies
2 Medals
34 minutes ago
32 Replies
4 Medals
18 hours ago
3 Replies
0 Medals
20 hours ago
3 Replies
1 Medal
1 day ago
2 Replies
1 Medal