The figure below shows a trapezoid, abcd, having side ab parallel to side dc. the diagonals ac and bd intersect at point o.

if the length of ao is double the length of co, the length of dc is

a. half of the length of ab

b. one-fourth the length of db

c. double the length of ao

d. equal to the length of ob

the answer is A. half the length of AB I just took the quiz and I got it right hope this helps!

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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step-by-step explanation:

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