the isosceles trapezoid ABDE is part of an isosceles triangle ACE. find the measure f the vertex angle of triangle ACE

Dylan is evaluation the expression 13+19+7+10 at one step in his work, dylan rewrites the equation as 13+7+19+10 which property of addition must dylan have used when he evaluated the expression?

How do you figure out which order to do two step equations in? like which thing do you subtract/add/multiply/divide first? i understand that you do the opposite of whatever's shown on the opposite side, but when?

100 points and 1- -12=y-36 2- x/25=-25 3- -n=40