Which arrow indicates the probability of choosing a blue marble from a bag of five red marbles and fifteen blue marbles? Arrow A
Arrow B
Arrow C
Arrow D

unless if u could do my questions, if not i wouldn't want to

can someone me: the midsegment through the legs of an isosceles triangle is 4 in. find the sides of the triangle if its perimeter is 20 in. ,   and point g is the centroid of the right △abc with hypotenuse ab=18 in. find cg.