Abag contains 4 red, 3 green and 2 blue marbles. what is the probability of selecting a green marble and then a blue marble assuming you replace the first marble?

1st of all, this makes my brain hurt

2nd of all, which one was the first marble?

y=mx+b

step-by-step explanation:

m slope

b y-intercept

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