Question is in picture, i just need the perimeter, ! *also i'll give +brainliest! *

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.