The three counters shows in the table are used for a board game. if the counters are tossed, how many ways can at least one counter with side a occur?

Can someone pls ! pls answer all. no explanation needed..

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

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.