HURRY! CAN SOMEONE PLEASE HELP ME WITH THESE QUESTIONS, ILL GIVE YOU BRAINILST IF YOU DO AND 18 POINTS

Use δjkl and δmpn to determine whether don's claim is true or false. which of the following should don use to prove the triangles are similar? sss sas aas aa

Which expressions equal 9 when x=4 and y=1/3 a. x2+6y b. 2x + 3y c. y2-21x d. 5 (x/2) -3y e. 3x-9y

Given δjkl : δxyz, find x. a)10 b)12 c)16 d)20