Use the squared identities to simplify sin^2x sin^2x

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.

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position