First we are going to find the common denominator of both fractions. To do that, we are going to multiply their denominators:
Now we can rewrite our expression using the common denominator:
Finally, we can use the trig identities:
and
to simplify our trig expression:
We can conclude that the correct answer is the fourth one.
C because drawing the blue marble doesn’t affect drawing the yellow marble because the blue marble was replaced
The question you've asked and the question on the attachment are different.
6691 ÷ 28 = 238.9642857
2409 ÷ 19 = 126.7894737