A bag contains 5 blue, 3 red, 6 green, 9 orange, and 20 black marbles. What is the ratio of the number of blue marbles to the number of marbles that are orange or green?

the answer is C

Step-by-step explanation:there are 5 blue marbles then you add 6 green and 9 orange, that makes 15 so your answer is 5 to 15

  q

step-by-step explanation:

each line from a vertex to the midpoint of the opposite side is called a median. the point where the medians intersect, point q, is the centroid.

the centroid of δabc is point q.