The newest invention of the 6.431x staff is a three-sided die. on any roll of this die, the result is 1 with probability 1/2, 2 with probability 1/4, and 3 with probability 1/4. consider a sequence of six independent rolls of this die. find the probability that exactly two of the rolls result in a 3.

Combined megan and kelly worked 60 hours.kelly worked twice as many hours as megan.how many hours did they each worked?

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

Someone answer asap for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =