If x = 5 and 5 = y, then x = y

what algebraic equality property justifies the above statement?
reflexive
transitive < i think it's this
symmetric
addition

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39