It costs $7 to play a very simple game, in which a dealer gives you one card from a deck of 52 cards. Note that there are 4 suits (heart, spade, diamond, clover) and 13 ranks (Ace, 2, 3, , 10, Jack, Queen, King) in a deck of 52 cards. If the card is a heart, spade, or diamond, you lose. If the card is a clover other than the queen of clovers, you win $13. If the card is the queen of clovers, you win $52. The random variable X represents your net gain from playing this game once, or your winnings minus the cost to play. What is the mean of X

If 1 km = 0.621 miles, how many miles are in a centimeter

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?