Using the graphing function on your calculator, what is the solution to the system of equations show below?
y + 2x = 5
4y+ 5x = 14
O A. No solution
B. More than 1 solution
O c. x = 1, y = 2
O D. x = 2, y = 1

If 90° < θ < 180° and cotθ = -1/3, then cscθ =

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.

Right triangle abc has three sides with lengths ab= 119, bc = 169, ca= 120. find the value of cos c. hint: draw and label the triangle. the hypotenuse is always the longest.