In a quadrilateral abcd, ab ∥ dc and ad ∥ bc . find the perimeter of δcod if the diagonals of the quadrilateral intersect each other at point o and ac = 20 in, bd = 20 in, ab = 13 in.

An unknown number of kids and buses are getting assigned. when assigning 4 kids to each bus, there are 2 kids that aren't placed in a bus. when assigning 8 kids to each bus, there are 2 empty buses. how many total kids are there?

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?