Triangle RST has coordinates R(-1,7), 5 (3,-1) and T(9,2). Find the coordinates of point X the midpoint of side RS. please help

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte

Iknow the answer but the calculator doesn't seem to give the right one