A point has the coordinates (0, k). Which reflection of the point will produce an image at the same coordinates, (0, k)?
ОО
a reflection of the point across the x-axis
a reflection of the point across the y-axis
O a reflection of the point across the line y = x
O a reflection of the point across the line y = -X

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.

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.