What is the determinant of an identity matrix?
–10
–1
0
1

The determinant of the identity matrix In is always 1, and its trace is equal to n.

Step-by-step explanation: that determinant is equal to the determinant of an N minus 1 by n minus 1 identity matrix which then would have n minus 1 ones down its diagonal and zeros off its diagonal.

this linear equation would have just one solution.

step-by-step explanation:

the reason why this would have one solution is that it is an expression with just one variable. since that variable is not raised to a power, it will always have just one solution.

answer: the answer for that is 22/3