Define a relationRonZasxRyif and only ifx2 y2is even. ProveRis anequivalence relation. Describe its equivalence clas

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

Icould really use some with this question.