Scroll:matrices >> Solve an equation >> ps (4140)


Written Instructions:

For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..

For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.

Leave your answers in the simplest form or correct to two decimal places.



 

1)  

If

A= 
13
42
 
B= 
2-3
31
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




2)  

If

A= 
46
43
 
B= 
1-1
45
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




3)  

If

A= 
63
31
 
B= 
2-2
54
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




4)  

If

A= 
33
31
 
B= 
1-1
41
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




5)  

If

A= 
36
45
 
B= 
2-2
53
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




6)  

If

A= 
63
34
 
B= 
3-2
25
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




7)  

If

A= 
54
32
 
B= 
3-4
31
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




8)  

If

A= 
24
44
 
B= 
4-1
21
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




9)  

If

A= 
54
22
 
B= 
4-2
51
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




10)  

If

A= 
65
45
 
B= 
1-2
45
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




 

1)  

If

A= 
13
42
 
B= 
2-3
31
 
Find the matric         C = 2A + B

C =


 
Answer: 4 Answer: 3
Answer: 11 Answer: 5


SOLUTION 1 :

 

 
A
 
=  
13
42
 
B =  
2 -3
3 1
 

=  

2A = 2 
13
42
 
= 
26
84
 

C = 2A + B

C = 
26
84
 
+ 
2-3
31
 
= 
43
115
 

C = 

 
43
115
 

 



2)  

If

A= 
46
43
 
B= 
1-1
45
 
Find the matric         C = 2A + B

C =


 
Answer: 9 Answer: 11
Answer: 12 Answer: 11


SOLUTION 1 :

 

 
A
 
=  
46
43
 
B =  
1 -1
4 5
 

=  

2A = 2 
46
43
 
= 
812
86
 

C = 2A + B

C = 
812
86
 
+ 
1-1
45
 
= 
911
1211
 

C = 

 
911
1211
 

 



3)  

If

A= 
63
31
 
B= 
2-2
54
 
Find the matric         C = 2A + B

C =


 
Answer: 14 Answer: 4
Answer: 11 Answer: 6


SOLUTION 1 :

 

 
A
 
=  
63
31
 
B =  
2 -2
5 4
 

=  

2A = 2 
63
31
 
= 
126
62
 

C = 2A + B

C = 
126
62
 
+ 
2-2
54
 
= 
144
116
 

C = 

 
144
116
 

 



4)  

If

A= 
33
31
 
B= 
1-1
41
 
Find the matric         C = 2A + B

C =


 
Answer: 7 Answer: 5
Answer: 10 Answer: 3


SOLUTION 1 :

 

 
A
 
=  
33
31
 
B =  
1 -1
4 1
 

=  

2A = 2 
33
31
 
= 
66
62
 

C = 2A + B

C = 
66
62
 
+ 
1-1
41
 
= 
75
103
 

C = 

 
75
103
 

 



5)  

If

A= 
36
45
 
B= 
2-2
53
 
Find the matric         C = 2A + B

C =


 
Answer: 8 Answer: 10
Answer: 13 Answer: 13


SOLUTION 1 :

 

 
A
 
=  
36
45
 
B =  
2 -2
5 3
 

=  

2A = 2 
36
45
 
= 
612
810
 

C = 2A + B

C = 
612
810
 
+ 
2-2
53
 
= 
810
1313
 

C = 

 
810
1313
 

 



6)  

If

A= 
63
34
 
B= 
3-2
25
 
Find the matric         C = 2A + B

C =


 
Answer: 15 Answer: 4
Answer: 8 Answer: 13


SOLUTION 1 :

 

 
A
 
=  
63
34
 
B =  
3 -2
2 5
 

=  

2A = 2 
63
34
 
= 
126
68
 

C = 2A + B

C = 
126
68
 
+ 
3-2
25
 
= 
154
813
 

C = 

 
154
813
 

 



7)  

If

A= 
54
32
 
B= 
3-4
31
 
Find the matric         C = 2A + B

C =


 
Answer: 13 Answer: 4
Answer: 9 Answer: 5


SOLUTION 1 :

 

 
A
 
=  
54
32
 
B =  
3 -4
3 1
 

=  

2A = 2 
54
32
 
= 
108
64
 

C = 2A + B

C = 
108
64
 
+ 
3-4
31
 
= 
134
95
 

C = 

 
134
95
 

 



8)  

If

A= 
24
44
 
B= 
4-1
21
 
Find the matric         C = 2A + B

C =


 
Answer: 8 Answer: 7
Answer: 10 Answer: 9


SOLUTION 1 :

 

 
A
 
=  
24
44
 
B =  
4 -1
2 1
 

=  

2A = 2 
24
44
 
= 
48
88
 

C = 2A + B

C = 
48
88
 
+ 
4-1
21
 
= 
87
109
 

C = 

 
87
109
 

 



9)  

If

A= 
54
22
 
B= 
4-2
51
 
Find the matric         C = 2A + B

C =


 
Answer: 14 Answer: 6
Answer: 9 Answer: 5


SOLUTION 1 :

 

 
A
 
=  
54
22
 
B =  
4 -2
5 1
 

=  

2A = 2 
54
22
 
= 
108
44
 

C = 2A + B

C = 
108
44
 
+ 
4-2
51
 
= 
146
95
 

C = 

 
146
95
 

 



10)  

If

A= 
65
45
 
B= 
1-2
45
 
Find the matric         C = 2A + B

C =


 
Answer: 13 Answer: 8
Answer: 12 Answer: 15


SOLUTION 1 :

 

 
A
 
=  
65
45
 
B =  
1 -2
4 5
 

=  

2A = 2 
65
45
 
= 
1210
810
 

C = 2A + B

C = 
1210
810
 
+ 
1-2
45
 
= 
138
1215
 

C = 

 
138
1215