Answer:
det(A)=-det(B)
Step-by-step explanation:
We have two matrices A, and B.
Matrix B is obtained by swapping rows 1 and 3 of matrix A.
Whenever we swap rows in matrices, the determinants does not change but the sign changes.
Therefore
det(A)=-det(B)
Also no two rows of of both matrices are the same, therefore
det(A)≠0, and det(B)≠0
Answer:
V= 134.04 ft³
Step-by-step explanation:
Answer: $208 dollars
Step-by-step explanation: There were 9 friends, and in total there was $1,872 dollars. To find how much money each person got, you divide 1,872 by 9 and get your final answer of $208 for each person.
The answer is X=-4 , mark me brainless
