Find the perimeter of rectangle L I N T.

It says round to the nearest hundredth, help!

Show algebraically that f and g are inverse functions f(x)=x^2/-6; g(x)=square root of 2x+12

During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.