Mathematics 63 Online
OpenStudy (anonymous):

if the period of a pendulum varies directly as the square root of its length, and the period is 12 seconds when the length is 16 meters, then what is the length when the period is 17 seconds?

OpenStudy (saifoo.khan):

$y = k \sqrt x$

OpenStudy (anonymous):

I got k=3

OpenStudy (saifoo.khan):

$\checkmark$

OpenStudy (anonymous):

How do i work this out 17=3|dw:1319673646207:dw|