Select the correct answer from each drop-down menu. A student begins a proof of the law of cosines. His work is shown.
Y
Z
X
x
Z
zcos(X) A
у
Step 1: cos(X) = AX 쌀
zcos(X) = AX
The next step in the proof is to write an expression for the length of side AZ in terms of
Then the student should write an expression for the length of side AY in terms of
Next he can use the
to relate x, y, z, and

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)) =

Dots sells a total of 279 t-shirts ($2) and shorts ($4). in april total sales were $670. how many t-shirts and shorts did dots sell?

20 points + brainliest answer + my mom’s chocolate chip cookie ! subtract.