Answer: A . Not all 2 × 2 matrices have an inverse matrix. If the determinant of the matrix is zero, then it will not have an inverse; the matrix is then said to be singular. Only non-singular matrices have inverses.
Step-by-step explanation:
Mean is average of the numbers
Ex.
7,3
7+3=10/2=5
Use proportionals to find y.

Answer:y=12
Answer: what’s the answer
Step-by-step explanation: