Answer: Rosie is incorrect because she needs to do the exponent before subtracting.
Answer:
Suppose you have a fair coin: this means it has a 50% chance of landing heads up and a 50% chance of landing tails up. Suppose you flip it three times and these flips are independent. What is the probability that it lands heads up, then tails up, then heads up? So the answer is 1/8, or 12.5%.
8/10 of the students in the art class are painting.
1/2=5/10
5/10+3/10=8/10
<span>In this case, that would be 13,000.</span>
