My grade_7.unit_4.lesson_8-practice_pr oblems (1).pdf + 10
6. Could 10 inches and 78.5 square inches be the diameter and area of the same circle? Use an equation to explain
why or why not.

Find the value of the cosine for angle a

Three times the sum of a number and seven is negative thirty-six. what is the number?

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)) =