P(a) = 0.60, p(b) = 0.30, and p(a and b) = 0.10.what is p(a or b)?
a. 0.90
b. 0.70
c. 0.40
d. 0.80

Find the value of the cosine for angle a

Someone answer this asap rn 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)) =

Which of the following can be used to explain a statement in a geometric proof?