Question 21550
{{{1/sqrt(30-x)=4}}}solve for x
get rid of square root by squaring whole equation
{{{1/(30-x)=16}}}multiply both sides by 30-x
{{{1=16(30-x)}}}
{{{1=480-16x}}}
{{{-16x=-479}}}
{{{x=(-479)/-16}}}
x=29.9375
hope this helps
Pete