Plz help I don’t under stand how to get this common ratio

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

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.