Question

Which of the following is equivalent to log [125] 25 ?

1.076

3/2

2/3

2/5

Answer 1

Is 125 the base?

Answer 2

quick question...have you tried the calculator?

Answer 3

Do you know the change of base formula?

Answer 4

\[\log_{125}25=x \]
Put it in exponential form.

Answer 5

Then rewrite 125 and 25 as powers of 5.

Answer 6

can cheat with change of base.
elsewise since
\[5^2=25\] and \[5^3=125\]
\[125^{\frac{2}{3}}=\sqrt[3]{125}^2=5^2=25\] so your answer is
\[\frac{2}{3}\]

Answer 7

Thanks:)

Answer 8

if you're gonna cheat then might as well do \[\log 25 \div \log 125\] @satellite73

Answer 9

Must read @lgbasallote's tutorial

Answer 10

zacty what i meant. got a calculator, all you need is change of base and be done

Answer 11

course your calculator will give you something like \(.666667\)

Answer 12

i know how to do it, i just dont want to... And i dont mean to be rude but if you dont want to help why comment?

Answer 13

@satellite73 Math -> Frac! :D
http://puu.sh/uN3R