Will mark brainiliest 1. find x (diagram attached) 2. find angle k of the triangle (attached) 3. find x in the triangle (attached, triangle has diagonals )

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)) =

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b

What is a correct first step in solving the inequality-4(3-5x)> -6x+9