Okay, so we know it is going to be more than 32000, right?
967.50 = 450 + 28.75p
967.50 - 450 = 28.75p
517.5 = 28.75p
18 = p
4/5 because 12/3=4 and 15/3=5
X= -1 beacuse negative one plus one is 0 and that will equal zero for both sides
You have a bag containing 8 + 20 = 28 marbles.
After you pull a black marble you have 28 - 1 = 27 remaining marbles.
There are 20 yellow marbles in the bag.
The probability of pulling a yellow marble is now