Test Bank For Finite Mathematics for the Managerial, Life, and Social Sciences - 12th - 2018 All Chapters

DOWNLOAD THE Test Bank for Finite Mathematics 11th Edition Lial
k k k k k k k k k



MULTIPLEkCHOICE.k Choosek thek onekalternativek thatk bestk completesk thek statementk ork answersk thek question.

Usek thekechelonkmethodktoksolvek thek systemkofk twokequationskinktwokunknowns.
1) xk+k9yk=k51
-7xk+k8yk=k69
A) (-4,k7)
B) (-3,k6)
C) (3,k7)
D) Noksolution
kAnswer:k B

2) xk-k3yk=k15
-5xk-k2yk=k10
A) (1,k-6)
B) (5,k0)
C) (0,k-5)
D) Noksolution
kAnswer:k C

3) xk+k5yk=k 2
2xk+k6yk=k 4
A) (-2,k-1)
B) (3,k2)
C) (2,k0)
D) Noksolution
kAnswer:k C

4) 9xk+k6yk=k129
5xk-k2yk=k29
A) (8,k9)
B) (9,k9)
C) (9,k8)
D) Noksolution
kAnswer:k C

5) 7xk+k8yk=k 8
-2xk+k4yk=k 4
A) (0,k2)
B) (-1,k2)
C) (0,k1)
D) Noksolution
kAnswer:k C

6) -7xk+k5yk=k14
3xk+k3yk=k-6
A) (-2,k0)
B) (-2,k1)
C) (-3,k1)
D) Noksolution
kAnswer:k A




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, DOWNLOAD THE Test Bank for Finite Mathematics 11th Edition Lial
k k k k k k k k k




7) -7xk+k30k=k 9y
3xk+k6yk=k15
A) (3,k2)
B) (2,k2)
C) (3,k1)
D) Noksolution
Answer:k C
k




8) 4xk-k2yk=k6
20xk -k10yk =k24
A) (1,k0)
k1k k3k
B) yk+k ,ky
2 2
C) 1,k-k1
D) Noksolution
Answer:k D
k




9) 2xk+k6yk=k4
10xk+k30yk=k20
A) -k1,k1
B) -k3yk+k 2,k y
C) 2,k 0
D) Noksolution
Answer:k B
k




Usek thek echelonkmethodktoksolvek thek system.
kxk kyk
10) +k =k3
3 3
xk-k yk=k-7
A) (-1,k9)
B) (1,k8)
C) (0,k9)
D) Noksolution
Answer:k B
k



x
k kkyk
11) +k =k-1
5 5
xk kyk k1
-k =k-k
4 4 4
A) (-4,k-1)
B) (3,k-1)
C) (-3,k-2)
D) Noksolution
Answer:k C
k




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,DOWNLOAD THE Test Bank for Finite Mathematics 11th Edition Lial
k k k k k k k k k




3xk k3yk k33
k
12) -k =k
8 5 80
4xk k4yk k23
k
+k =k
7 5 35
1 1
k k k
A) k ,
4k k 2
3 1
k k k
B) k ,
2k k 4
3 3
k k k
C) k ,
2k k 4
3 1
k k k
D) k ,
4k k 2
Answer:k B

3xk kyk
k
13) -k =k-18
2 3
3xk k2yk
k
+k =k-9
4 9
A) (0,k-12)
B) (-12,k0)
C) (0,k12)
D) (12,k 0)
Answer:k B

7xk k5yk
k
14) +k =k4
3 4
5xk
k
-
k2yk=k21k6


A) (6,k-8)
B) (-6,k8)
C) (-6,k-8)
D) (6,k8)
Answer:k A

5yk
k
15) 3xk-k =k10
7
2xk k9yk k19
k
-k =k
3 7 5
k7
A) 3,k-k
9
k7
B) 3,k
5
k7
C) 3,k
9
k7
D) 3,k-k
5
Answer:k D




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, DOWNLOAD THE Test Bank for Finite Mathematics 11th Edition Lial
k k k k k k k k k




Fork thek followingksystemsk ofk equationsk inkechelonk form,ktellkhowkmanyk solutionsk therek arek ink nonnegativek integers.
16) xk-k5yk+k8zk=k60
2yk+k5zk =k44
A)k 5
B)k 7
C)k6
D)k 9
Answer:k A

17) xk+k3yk+k4zk =k80
4yk+k5zk =k104
A)k 2
B)k 4
C)k5
D)k 3
Answer:k D

18) 3xk+k2yk+k2zk =k170
yk-k4zk=k10
A) 6
B) 15
C) 5
D) 7
Answer:k A

Solvektheksystemkofkequations.kLetkzkbekthekparameter.
19) -3xk-k6yk-k5zk=k -3
-5xk+k yk+k3zk =k 7
k13k k13k
A) -k +k z,k7k+k3z,kz
11 33
k13k k13k
B) -k +k z,k7k-k3z,kz
11 33
13k k13k k12k k34k
k
C) -k +k z,k -k z,kz
11 33 11 33
D) (39k-k 13z,k -36k +k 39z,k z)
Answer:k C

20) 4xk+k yk+k2zk =k -3
7xk-k7yk-k4zk=k-10
k31k k2k k19k k6k
A) -k -k z,k -k z,kz
35 7 35 7
B) (-31k-k10z,k19k-k31z,kz)
k31k k2k
C) -k -k z,k-3k+k2z,kz
35 7
k31k k2k
D) -k -k z,k-3k-k2z,kz
35 7
Answer:k A




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