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Eleventh Grade (Grade 11) Matrices Questions

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Grade 11 Matrices
Find the inverse of the matrix, if it exists.

[-4-278]
  1. Does Not Exist
  2. [4919-718-29]
  3. [2919-718-419]
  4. [-49-1971829]
Grade 11 Matrices
A square matrix A is NOT invertible (does not have an inverse) if which of the following is true?
  1. Matrix A is the identity matrix
  2. A1,1<0
  3. Matrix A has any elements equal to zero
  4. det(A)=0
Grade 11 Matrices CCSS: HSN-VM.C.8
Find the product, if possible. [20-3514]⋅[3-2]
  1. [6-19-5]
  2. [6-19-5]
  3. [5-503]
  4. Impossible
Grade 11 Matrices
Which of the following can you not do when solving a system of equations using matrices?
  1. Add two rows.
  2. Switch two rows.
  3. Add a constant to a row.
  4. Multiply a row by a constant.
Grade 11 Matrices CCSS: HSN-VM.C.8
Evaluate, if possible. [-5768]-[40-2901]
  1. [-97-38]
  2. [13-73-8]
  3. [-974-38-13]
  4. Impossible
Grade 11 Matrices CCSS: HSN-VM.C.8
Evaluate, if possible.
[348131]+[619234]
  1. [92135115]
  2. Not possible
  3. [95105]
  4. [74126412]
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