Two groups of friends go to a baseball game and each plan to share snacks if 3 drinks and 2 orders of churros cost 16.00 and 5 drinks and 5 orders of churros cost 31.25 how much is 1 drin and 1 order of churros cost
Use back substitution to solve each of the following systems of
equations:
(a)
x1 + x2 + x3 = 8
2x2 + x3 = 5
3x3 = 9
(b)
x1 + 2x2 + 2x3 + x4 =5
3x2 + x3 − 2x4 =1
−x3 + 2x4 = − 1
−x3 + 2x4 =4
Let c be the distance between Carlisle and Wellesley, let b be the distance between Carlisle and Stonebridge, and let a be the distance between Wellesley and Stonebridge.
· If you did a circuit, traveling from Carlisle to Wellesley to Stonebridge and back to Carlisle, you would travel 73 miles.
· The distance from Stonebridge to Carlisle is 12 miles farther than the distance from Wellesley to Carlisle..
· If you drove from Stonebridge to Carlisle and back to Stonebridge, and then continued to Wellesley then back to Stonebridge, you would travel 102 miles.
Write a system of linear equations to represent the situation.
naomi wants to buy a new computer for $840. She is considering two payments plans that require weekly payments. Which plan will pay for the computer faster ?