1.
Solve
for
x
by the method of determinants.
A.
B.
C.
D.
11
Hint
2.
Solve
by the method of determinants.
A.
B.
C.
D.
Hint
3.
Solve
by the method of determinants. Round to the nearest hundredth.
A.
(2.46, 1.20)
B.
(-1.86, -2.20)
C.
(1.86, 2.20)
D.
(1.68, 4.40)
Hint
4.
Two sides of an angle are contained in lines whose equations are
and
Find the coordinates of the vertex of the angle. Round to the nearest hundredth.
A.
(1.78, -1.16)
B.
(2.76, 3.16)
C.
(1.89, 3.26)
D.
(1.79, 1.06)
Hint
5.
Which method of finding solutions would work best to find the solutions to the system
and state why?
A.
adding and multiplying
B.
substitution
C.
adding or subtracting
D.
determinants and matrices, because there are fewer calculations
Hint