A student claims that he can solve 12x+8y=40 and 4x+5y=18 for x and y by adding the first equation to a multiple of the second equation. He can then use the new equation and the first equation to create a new system that has the same solution as the original system. The student begins by listing four different equations. Determine whether the student can use that equation to replace the second equation and create a new system that has the same solution. Select Yes or No for each equation.

The empire state building in new york city is 1454 feet tall a model of a building is 24 inches tall what is the ratio of the height of the model to the height of the actual empire state building

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

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)) =