Amanufacturer of brand a jeans has daily production costs of c=0.3x^2-120x+12,590, where c is the total cost (in dollars) and x is the number of jeans produced. how many jeans should be produced each day in order to minimize costs? what is the minimum daily cost?

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.