At a raffle, 1000 tickets are sold for $5 each. there are 20 prizes of $25, 5 prizes of $100, and 1 grand prize of $2000. suppose you buy one ticket. 3. if you play in such a raffle 100 times, what is the expected value of your net gain? 2. find the mean (expected value) of your net gain x, and interpret what this value means in the context of the game.

The two-way table shows the number of people whose hobbies are reading or solving puzzles and who either ride a motorcycle or don’t ride a motorcycle. among people whose hobby is reading, what is the relative frequency of not riding a motorcycle? express your answer as a decimal, and round it to the nearest hundredth if necessary. enter your answer in the box. reading solving puzzles ride a motorcycle 7 3 don't ride a motorcycle 5 9

What is the quotient of -3/8and-1/3?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.