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:
the first i believe but the one with 50 confuses me
Step-by-step explanation:
Answer:
Your answer is C. 12 hours
Step-by-step explanation:
125 = 7 + 45
125 - 45 = 7h
7 = 80
H = 80/7
H = 11.429 h
He's going to give 2 quizzes per week. You divide 34 by 17 and you get two. I hope this helps! :D