A suitable calculator finds the determinant to be ...
... B. -203
_____
This can be calculated by hand by copying the first two columns to the right of the given matrix, then forming the sum of products of the downward diagonals and subtracting the sum of products of the upward diagonals.
... (-4)(3)(-5) +(-4)(-5)(-5) +(-3)(3)(2) -(-5)(3)(-3) -(2)(-5)(-4) -(-5)(3)(-4)
... = 60 -100 -18 -45 -40 -60
... = -203
Answer:
10
Step-by-step explanation:
GIVEN: Josiah is playing a computer game that lets him customize a story There are different eras and
location to choose from.
TO FIND: How many different stories can Josiah construct.
SOLUTION:
Total different eras
Total different locations
He can choose one era and one location.
Total different stories that Josiah can construct
Hence Josiah can construct 10 different stories.