Three softball teams ordered equipment from the same catalog. The first team spent $285 on 5 shirts, 4 caps, and 8 bats. The second team spent $210 on 12 shirts and 6 caps. The third team spent $250 for 7 shirts, 10 caps, and 3 bats. What were the catalog prices for shirts, caps, and bats?
2 answers
I have to use matrices for this one
so, your equations are
5s+4c+8b = 285
12s+6c = 210
7s+10c+3b = 250
Use your favorite method of solution, and see whether you arrive at this solution:
http://www.wolframalpha.com/input/?i=%7B%7B5,4,8%7D,%7B12,6,0%7D,%7B7,10,3%7D%7D*%7B%7Bs%7D,%7Bc%7D,%7Bb%7D%7D+%3D+%7B%7B285%7D,%7B210%7D,%7B250%7D%7D
5s+4c+8b = 285
12s+6c = 210
7s+10c+3b = 250
Use your favorite method of solution, and see whether you arrive at this solution:
http://www.wolframalpha.com/input/?i=%7B%7B5,4,8%7D,%7B12,6,0%7D,%7B7,10,3%7D%7D*%7B%7Bs%7D,%7Bc%7D,%7Bb%7D%7D+%3D+%7B%7B285%7D,%7B210%7D,%7B250%7D%7D
1 answer