The rectangular pupil of an octopus is estimated to be 15 millimeters long with an area of (30x - 195) square millimeters. Write an expression that represents the perimeter (in millimeters) of the octopus pupil.

What is the answer to |-2x-5|-|-4+8| and x=7

Logan wants to know how many skateboards have defective parts. he inspects 20,000 skateboards and keeps track of the number of defects per board. use his probability distribution table to find the expected value for defects on a skateboard.

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer