Answer with Step-by-step explanation:
We are given that
A and B are matrix.
A.We know that for two square matrix A and B
Then, 
Therefore, it is true.
B. det A is the product of diagonal entries in A.
It is not true for all matrix.It is true for upper triangular matrix.
Hence, it is false.
C.

When is a factor of the characteristics polynomial of A then -5 is an eigenvalue of A not 5.
Hence, it is false.
D.An elementary row operation on A does not change the determinant.
It is true because when an elementary operation applied then the value of matrix A does not change.
Answer:
B and C
if n=3 then 5ⁿ=5³=5×5×5=125
n³=3³=3×3×3=27
hope it helps :)
Answer:
6
Step-by-step explanation: because its online
Answer:
Interpret and compare the data.
Step-by-step explanation:
elim options 1 and 2
analyzing means you don't have findings
The scale factor of the drawing as described is; 1.5in/ft
<h3>Scale factor of drawings</h3>
According to the question;
- The given scale factor of the drawing is; 3 in: 2 ft.
In essence, 3 inches on the drawing board represents 2 ft of the object.
Hence, by finding the quotient of the units, we have;
Read more on scale factor;
brainly.com/question/2826496