## anonymous 5 years ago evaluate log of 9 71

1. Owlfred

Hoot! You just asked your first question! Hang tight while I find people to answer it for you. You can thank people who give you good answers by clicking the 'Good Answer' button on the right!

2. immanuelv

1.940029217

3. immanuelv

is it log base 9?

4. anonymous

$log_9(71)=\frac{ln(91)}{ln(9)}$

5. immanuelv

uhhh. u mean ln 71?

6. anonymous

i meant $\frac{ln(71)}{ln(9)}$

7. anonymous

silly me

8. anonymous

are you sure it isn't $log_9(81)=2$ because $9^2=81$?

9. anonymous

you guys rock!

10. anonymous

yes its $\log_{9} 71$

11. anonymous

k then use change of base formula as we wrote

12. anonymous

change to what

13. anonymous

btw you can use $\frac{log(71)}{log(9)}$ too, it doesn't matter what base you use

14. anonymous

oh okayy i get what your saying so the first one is right?

15. anonymous

yes

16. anonymous

91 was a typo

17. anonymous

yeah