Answer:
The answer is 4 hours and 49 minutes
Step-by-step explanation:
Answer:
Check.
Step-by-step explanation:
To prove it we need to know that for two matrices A and B we have that:
det(AB) = det(A)*det(B) and
. Now:





.
Answer:
-2/3
Step-by-step explanation:
Where 2 lines are perpendicular, the slope of one = - 1 / slope of the other.
Thus the slope of the red line is - 1 / 3/2
= -2/3
0-2+9=7 is the answer I think