Help me with this please

State if the two triangles are congruent. if they are, state how you know?

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.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*