You have a bag of 12 marbles. Six are blue, two are green, three are yellow, and one is red. If you reach into the bag and pull out one marble, what is the probability that it will be yellow?

1/4 or 25%

Step-by-step explanation:

Given that:

If you reach into the bag and pull out one marble, so  the probability that it will be yellow is:

P (Yellow) = Number of yellow marbles in the bag / Number of marbles in the bag

= 3/12

= 1/4 or 25%

Hope it will find you well.

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq