1.
What is the value of the determinant?
A.
-8
B.
-12
C.
-3
D.
12
Hint
2.
Use Cramer's rule to solve the system of equations.
A.
(0.4, 0.2)
B.
(0.2, 0.4)
C.
(-0.4, -0.2)
D.
(0.011, 0.0055)
Hint
3.
Find the determinant of
A.
0
B.
-21
C.
-11
D.
-16
Hint
4.
Find the value of the determinant of
A.
2
B.
–32
C.
64
D.
6
Hint
5.
Two sides of an angle are contained in lines whose equations are 6
x
+ 4
y
= 15 and 7
x
– 9
y
= 3. Find the coordinates of the vertex of the angle. Round to the nearest hundredth.
A.
(–1.79, 1.06)
B.
(–147, –87)
C.
(1.79, 1.06)
D.
(147, 87)
Hint