What is the domain of the relation graphed below
domain: {-5,-4,-3,-2,0,1,2,3,4,5}
domain {-3,-2,0,1,4}
domain: {-5,-4,-3,1,2,5}
domain {(-5-,,-3)}

The perimeter of △cde is 55 cm. a rhombus dmfn is inscribed in this triangle so that vertices m, f, and n lie on the sides cd , ce , and de respectively. find cd and de if cf=8 cm and ef=12 cm. the answer is not cd=20 and de=15. i have tried that one, it does not work.