A box contains 720 marbles. The result of 20 marbles pulled at random from the box is given below. • 5 red marbles • 6 blue marbles • 3 green marbles • 4 black marbles • 2 yellow marbles Based on this information, how many yellow marbles could be expected in the box? A) 64 B) 72 C) 88 D) 100

20 is the size of a random sample of 720 marbles.

Notice that 720=20*36

If there are 2 yellow marbles in the sample of 20 marbles, then we can expect:

2*36=72 yellow marbles in the box of 720 marbles

So, B) 72 is the correct answer

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2