Question

help completely lost...
Which of the following is equivalent to log50 7 rounded to three decimal places?

2.010

0.497

–0.615

–0.854

Answer 1

@dumbcow

Answer 2

Log (50^k) = log (7)
K * log (50) = log (7)
K = log(7) / log(50)
Log 50 (7) = log 7 / log 50.

Answer 3

\[\log_{50} 7=x \leftarrow \rightarrow 7 = 50^{x}\]
this tells you answer is between 0 and 1

to use calculator, apply change of base
\[\log_{50}7 = \frac{\ln 7}{\ln 50} \]

Answer 4

i dont have a caculator that can do that

Answer 5

sure you do...every scientific calculator has natural log (even the windows calculator :)

Answer 6

oh ok thanks i willtry finding it :)

Answer 7

i got 1.56228250045 for my answer and it doesnt match any of my choices

Answer 8

@dumbcow

Answer 9

thanks so much i understand now

Answer 10

yw