Find the unknown leg of the right triangle 18,26,x I need it fast, please

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

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.