Find the inverse of each matrix (+5 points if you do it by hand and show your work)
[1 -1] [-1/2 1]
10
Find the inverse of each matrix (+5 points if you do it by hand and show your work)
[0 -1/4] [-1/2 1]
10
Find the inverse of each matrix (+5 points if you do it by hand and show your work)
[-6 7] [-1 1]
10
Solve each system using inverse matrices
(-2,4)
20
Solve each system using inverse matrices
(3,4)
20
Solve each system using inverse matrices
(-1,5)
20
Hogwarts is selling tickets to the quidditch finals. On the first day, the school sold 2 teacher tickets and 8 student tickets for a total of 90 knuts. Then the school took in 115 by selling 7 teacher tickets and 8 student tickets.
5 knuts for teacher tickets, and 10 knuts for student's tickets.