A and b I believe I think it is
Answer:
-2
Step-by-step explanation:
Answer:
the expected value of this raffle if you buy 1 ticket = -0.65
Step-by-step explanation:
Given that :
Five thousand tickets are sold at $1 each for a charity raffle
Tickets are to be drawn at random and monetary prizes awarded as follows: 1 prize of $500, 3 prizes of $300, 5 prizes of $50, and 20 prizes of $5.
Thus; the amount and the corresponding probability can be computed as:
Amount Probability
$500 -$1 = $499 1/5000
$300 -$1 = $299 3/5000
$50 - $1 = $49 5/5000
$5 - $1 = $4 20/5000
-$1 1- 29/5000 = 4971/5000
The expected value of the raffle if 1 ticket is being bought is as follows:





Thus; the expected value of this raffle if you buy 1 ticket = -0.65
Answer:
Step-by-step explanation:
first one: w-8 =5
reverse it- 8+5= 13 so 13-8= 5
second one: 5x-2
2x-2+3x << group together the x's
2x+3x=5x and you'll end up with 5x-2
last one: r/5=-9
again, reverse it- -9 x 5 = -45
a negative times a positive = a negative