Can someone explain to me how is it transitive property of equality, and not symmetric property of equality, in the 4th line of the proof.

Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

If angle b measures 25°, what is the approximate perimeter of the triangle below? 10.3 units 11.8 units 22.1 units 25.2 units

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b