Urgent! : which property justifies this statement?     if x + y = z and z = x + 4, then x + y = x + 4.   a. symmetric   b. distributive   c. transitive   d. associative

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm