Three of the following tricks are used to solve trigonometry equations, but one is not. can you find the one that is not used?
sometimes we turn single angles into double and half angles to solve trigonometry equations.
sometimes factoring is used to solve trigonometry equations.
sometimes radicals are removed and like terms are combined to solve trigonometry equations.
sometimes fractions are cleared in order to solve trigonometry equations.

The sum of two numbers is 86, and their difference is 20. find the two numbers

Find the perimeter of the figure shown above. a. 18 yds c. 20 yds b. 10 yds d. 24 yds select the best answer from the choices provided

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)) =