X^2 + 20x + 28 = 9 find the graphing/vertex form

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3

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.

Given: x - 4x > 0, then the solution set in interval notation is: (-2, 0) true o false