John has some coins, that are of two different denominations worth $2.55. The equations model the coins that John has. x + y = 15 and .10x + .25y = 2.55.a. How many coins does John have?b. Which expression represents the total cost of the dimes?c. Which expression represents the total cost of the quarters?d. How do you know your answers to part b and c are correct?e. In your own words, what does the equation x + y = 15 represent?

(05.02)a farmer has decided to divide his land area in half in order to plant soy and corn. calculate the area of the entire area so he knows how much soil is needed. a parallelogram with a height of 6 yards and side length 9 yards. the height forms a triangle with the slanted side of the rhombus with a base of 2.5 yards. rhombus is split into a soy half and a corn half. each bag of soil covers 40 square yards. how many bags should the farmer purchase?