Formula of determinant is ad - bc
= 2 x 9 - 4 x 3
= 18 - 12
= 6
So the required determinant of given matrix is 6
Answer:
Company A's cost would be $530
Company B's cost would be $610
difference is $80
Step-by-step explanation:
When 12 is added to a certain number and the sum is multiplied by 4,the end result is 60.
then the answe is 48