Answer:
A)
Step-by-step explanation:
lw=A
divide both sides by l
lw÷l=A÷l
w=A÷l
Answer:
-864
Step-by-step explanation:
The determinant of a matrix product is the product of the determinants. The determinant of a transpose is the same as the determinant of the original. Hence ...

The multiplication of an n×n matrix by a scalar 'a' multiplies its determinant by a^n, so the desired determinant is ...

Answer:
0.013
0.021
Step-by-step explanation:
I guess...
Answer D. It is the closets answer to my calculations so im sorry if im wrong
You can use substitution and solve y-x=2 for y which is y= x+ 2 and plug it into the y of the other equasion and you get x=5 y=7