Write an expression to represent the words.
1 ethan collected 16 shells he lost 4 of them while walking home

If the value of cos330°is√3/2 then find cos 165°.

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.

Which of the following scenarios demonstrates an exponential decay