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| Question 1 | 5 points | Save |
| Question 2 |
| Question 3 |
| Question 4 |
| Question 5 |
| Question 6 |
| Question 7 |
| Question 8 |
| Question 9 |
| Question 10 |
| Question 11 |
| Question 12 |
| Question 13 |
| Question 14 |
| Question 15 |
| Question 16 |
| Question 17 |
| Question 18 |
| Question 19 |
| Question 20 |
[removed] [removed]
Que
stion
1
5 points Save
Perform the indicated matrix operations
.
Let A = and B = . Find 3A
+
4B.
Qu
estio
n 2
5 points Save
Perform the indicated matrix operations.
Let A = and B = . Find 4A + B.
Qu
estio
n 3
5 points Save
Find the inverse of the matrix.
No inverse
javascript:saveItem(‘_10011935_1′,’1’)
javascript:saveItem(‘_10011935_1′,’1’)
javascript:saveItem(‘_10011936_1′,’2’)
javascript:saveItem(‘_10011936_1′,’2’)
javascript:saveItem(‘_10011937_1′,’3’)
javascript:saveItem(‘_10011937_1′,’3’)
Qu
estio
n 3
5 points Save
Find the inverse of the matrix.
No inverse
Qu
estio
n 4
5 points Save
Solve the system of equations.
inconsistent (no solution)
x = 4, y = 0, z = 5
x = 4, y = 5, z = 0
x = 0, y = 5, z = 4
javascript:saveItem(‘_10011937_1′,’3’)
javascript:saveItem(‘_10011937_1′,’3’)
javascript:saveItem(‘_10011938_1′,’4’)
javascript:saveItem(‘_10011938_1′,’4’)
Qu
estio
n 5
5 points Save
Solve the system.
inconsistent (no solution)
y = -4x + 7, where x is any real number
x = -4y + 7, where y is any real number
y = 4x + 7, where x is any real number
Qu
estio
n 6
5 points Save
Use Cramer’s rule to solve the linear system.
x = 6, y = 0, z = 8
x = 5, y = -2, z = -8
x = 5, y = 2, z = 8
x = 2, y = 8, z = 2
Qu
estio
n 7
5 points Save
Find the maximum or minimum value of the objective function,
subject to the constraints graphed in this feasible region.
z = x + 6y + 9 Find minimum.
Minimum 25
Minimum 31
No Minimum
Minimum 41
javascript:saveItem(‘_10011939_1′,’5’)
javascript:saveItem(‘_10011939_1′,’5’)
javascript:saveItem(‘_10011940_1′,’6’)
javascript:saveItem(‘_10011940_1′,’6’)
javascript:saveItem(‘_10011941_1′,’7’)
javascript:saveItem(‘_10011941_1′,’7’)
Qu
estio
n 7
5 points Save
Find the maximum or minimum value of the objective function,
subject to the constraints graphed in this feasible region.
z = x + 6y + 9 Find minimum.
Minimum 25
Minimum 31
No Minimum
Minimum 41
Qu
estio
n 8
5 points Save
Find the value of the determinant.
-58
42
390
-42
Qu
estio
n 9
5 points Save
Solve the system of equations.
x = 0, y = 3, z = 0
inconsistent (no solution)
x = 0, y = 0, z = 3
x = 2, y = 3, z = 0
javascript:saveItem(‘_10011941_1′,’7’)
javascript:saveItem(‘_10011941_1′,’7’)
javascript:saveItem(‘_10011942_1′,’8’)
javascript:saveItem(‘_10011942_1′,’8’)
javascript:saveItem(‘_10011943_1′,’9’)
javascript:saveItem(‘_10011943_1′,’9’)
Qu
estio
n 9
5 points Save
Solve the system of equations.
x = 0, y = 3, z = 0
inconsistent (no solution)
x = 0, y = 0, z = 3
x = 2, y = 3, z = 0
Que
stion
10
5 points Save
Perform the indicated operations and simplify.
Let A = , B = , and C = . Find AB
+
BC.
Que
stion
11
5 points Save
Solve the problem.
Rob bought 2 pairs of shorts, 3 shirts and a pair of shoes for $146.64.
Jessie bought 3 pairs of shorts, 5 shirts and 2 pairs of shoes for
$256.35. Allen bought a pair of shorts and 4 shirts for $104.07. What
is the price of a pair of shorts? Express answer rounded to two
decimal places.
$14.55
$50.40
$22.38
$10.30
javascript:saveItem(‘_10011943_1′,’9’)
javascript:saveItem(‘_10011943_1′,’9’)
javascript:saveItem(‘_10011944_1′,’10’)
javascript:saveItem(‘_10011944_1′,’10’)
javascript:saveItem(‘_10011945_1′,’11’)
javascript:saveItem(‘_10011945_1′,’11’)
Que
stion
11
5 points Save
Solve the problem.
Rob bought 2 pairs of shorts, 3 shirts and a pair of shoes for $146.64.
Jessie bought 3 pairs of shorts, 5 shirts and 2 pairs of shoes for
$256.35. Allen bought a pair of shorts and 4 shirts for $104.07. What
is the price of a pair of shorts? Express answer rounded to two
decimal places.
$14.55
$50.40
$22.38
$10.30
Que
stion
12
5 points Save
Write the partial fraction decomposition of the rational
expression.
+
+
+
+
javascript:saveItem(‘_10011945_1′,’11’)
javascript:saveItem(‘_10011945_1′,’11’)
javascript:saveItem(‘_10011946_1′,’12’)
javascript:saveItem(‘_10011946_1′,’12’)
Que
stion
13
5 points Save
Solve the problem.
Given that = 3, find the value of the determinant
.
0
-9
6
9
Que
stion
14
5 points Save
Write the partial fraction decomposition of the rational
expression.
– –
– +
+ –
+ +
javascript:saveItem(‘_10011947_1′,’13’)
javascript:saveItem(‘_10011947_1′,’13’)
javascript:saveItem(‘_10011948_1′,’14’)
javascript:saveItem(‘_10011948_1′,’14’)
Que
stion
14
5 points Save
Write the partial fraction decomposition of the rational
expression.
– –
– +
+ –
+ +
Que
stion
15
5 points Save
Write the partial fraction decomposition of the rational
expression.
+
+
+ +
+ +
javascript:saveItem(‘_10011948_1′,’14’)
javascript:saveItem(‘_10011948_1′,’14’)
javascript:saveItem(‘_10011949_1′,’15’)
javascript:saveItem(‘_10011949_1′,’15’)
Que
stion
16
5 points Save
Graph the inequality.
x + y < -2
javascript:saveItem(‘_10011950_1′,’16’)
javascript:saveItem(‘_10011950_1′,’16’)
Que
stion
16
5 points Save
Graph the inequality.
x + y < -2
Que
stion
17
5 points Save
Perform the matrix multiplication.
javascript:saveItem(‘_10011950_1′,’16’)
javascript:saveItem(‘_10011950_1′,’16’)
javascript:saveItem(‘_10011951_1′,’17’)
javascript:saveItem(‘_10011951_1′,’17’)
Que
stion
17
5 points Save
Perform the matrix multiplication.
Que
stion
18
5 points Save
Solve the system using the inverse method.
x = 5, y = -2, z = 2
x = -5, y = -2, z = -2
x = 5, y = 2, z = -2
x = 2, y = 5, z = 2
Que
stion
19
5 points Save
Solve the system.
dependent (many solutions)
(2, 4)
(2, 3)
inconsistent (no solution)
javascript:saveItem(‘_10011951_1′,’17’)
javascript:saveItem(‘_10011951_1′,’17’)
javascript:saveItem(‘_10011952_1′,’18’)
javascript:saveItem(‘_10011952_1′,’18’)
javascript:saveItem(‘_10011953_1′,’19’)
javascript:saveItem(‘_10011953_1′,’19’)
Que
stion
19
5 points Save
Solve the system.
dependent (many solutions)
(2, 4)
(2, 3)
inconsistent (no solution)
Que
stion
20
5 points Save
Perform the indicated operation, whenever possible.
+
javascript:saveItem(‘_10011953_1′,’19’)
javascript:saveItem(‘_10011953_1′,’19’)
javascript:saveItem(‘_10011954_1′,’20’)
javascript:saveItem(‘_10011954_1′,’20’)
