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Matrices Review Game!

Matrices Review Game!. I will stop looking back with regrets or looking forward with fear and give the best I have today." ~Anonymous. 1. What are the dimensions of C and B?. 2. Give the entry in c 22 and a 23. 6. (1/2)C. 5. 2A - B. 3. A + B. 4. -2C. 4 5. 2x3 3x3.

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Matrices Review Game!

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  1. Matrices Review Game! I will stop looking back with regrets or looking forward with fear and give the best I have today." ~Anonymous

  2. 1. What are the dimensions of C and B? 2. Give the entry in c22 and a23 6. (1/2)C 5. 2A - B 3. A + B 4. -2C 4 5 2x3 3x3 No Calculator!

  3. Find x and y. 1. 2. x = 7 y = 3 x = -8 y = 4

  4. 1. BA 3. CD Can’t be done 4. AC 2. BC No Calculator!

  5. Give the identity matrix for a 4x4. Give the identity matrix for a 2x2. I I

  6. 1. det(A)= -1 3. det(C)= -40 Evaluate. 0 4. C-1= 2. A-1= No Calculator!

  7. 1. Write the matrix equation 2. Solve the system (-7, 15)

  8. 1. Write the matrix equation 2. Solve the system (4, 3, -7)

  9. 3x + 5y = –3 10y – 2z = 2 x = –z 1. Write the matrix equation 2. Solve the system (-2, 0.6, 2)

  10. Susan babysat for 8 hours and worked at Taco Bell for 3 hours. She made $58. When she babysat for 2 hours and worked at Taco Bell for 5 hours, she made $40. How much does Susan make per hour baby-sitting and working at Taco Bell? 1. Write a system of equations to model the situation. 2. Solve the system using matrix equations. 8x + 3y = 58 2x + 5y = 40 $5 Babysitting $6 Taco Bell

  11. A nurse is mixing a 3% saline solution and an 8% saline solution to get 2 liters of a 5% saline solution. How many liters of each solution must be combined? 1. Write a system of equations to model the situation. 2. Solve the system using matrix equations. 0.03x + 0.08y = 0.1 x + y = 2 1.2 L of 3% solution 0.8 L of 8% solution

  12. When working with matrices, don’t forget… And a… Row x Column

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