Answer:
A
Step-by-step explanation:
Because this ia so simple I don't even need to explain to waste my last few brain cells.
Answer:
145.9
Step-by-step explanation:
Gave up on delta math.
Answer:
coefficent matrix
Step-by-step explanation:
P. 366
"If the column of constant terms is not included, the matrix reduces to that of the coefficent matrix of the system"
-1 -3 -1
9 -9 -1
-1 -3 4
Answer:
it's 6
Step-by-step explanation:
B=7 and D=13, so 13-7= 6