What is the product when calculating with roman numerals? dd x c= ?

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

Sorry guys but as you have a small brain

Tamar is measuring the sides and angles of tuv to determine whether it is congruent to the triangle below. which pair of measurements would eliminate the possibility that the triangles are congruent