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= 
24
31
 
B= 
2-1
32
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




2)  

If

A= 
54
41
 
B= 
3-1
53
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




3)  

If

A= 
46
41
 
B= 
4-1
24
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




4)  

If

A= 
15
22
 
B= 
4-4
31
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




5)  

If

A= 
66
33
 
B= 
1-1
22
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




6)  

If

A= 
64
45
 
B= 
3-4
51
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




7)  

If

A= 
26
33
 
B= 
1-3
51
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




8)  

If

A= 
14
43
 
B= 
4-4
42
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




9)  

If

A= 
54
23
 
B= 
1-1
52
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




10)  

If

A= 
15
22
 
B= 
4-1
43
 
Find the matric         C = 2A + B

C =


 


Answer:_______________




 

1)  

If

A= 
24
31
 
B= 
2-1
32
 
Find the matric         C = 2A + B

C =


 
Answer: 6 Answer: 7
Answer: 9 Answer: 4


SOLUTION 1 :

 

 
A
 
=  
24
31
 
B =  
2 -1
3 2
 

=  

2A = 2 
24
31
 
= 
48
62
 

C = 2A + B

C = 
48
62
 
+ 
2-1
32
 
= 
67
94
 

C = 

 
67
94
 

 



2)  

If

A= 
54
41
 
B= 
3-1
53
 
Find the matric         C = 2A + B

C =


 
Answer: 13 Answer: 7
Answer: 13 Answer: 5


SOLUTION 1 :

 

 
A
 
=  
54
41
 
B =  
3 -1
5 3
 

=  

2A = 2 
54
41
 
= 
108
82
 

C = 2A + B

C = 
108
82
 
+ 
3-1
53
 
= 
137
135
 

C = 

 
137
135
 

 



3)  

If

A= 
46
41
 
B= 
4-1
24
 
Find the matric         C = 2A + B

C =


 
Answer: 12 Answer: 11
Answer: 10 Answer: 6


SOLUTION 1 :

 

 
A
 
=  
46
41
 
B =  
4 -1
2 4
 

=  

2A = 2 
46
41
 
= 
812
82
 

C = 2A + B

C = 
812
82
 
+ 
4-1
24
 
= 
1211
106
 

C = 

 
1211
106
 

 



4)  

If

A= 
15
22
 
B= 
4-4
31
 
Find the matric         C = 2A + B

C =


 
Answer: 6 Answer: 6
Answer: 7 Answer: 5


SOLUTION 1 :

 

 
A
 
=  
15
22
 
B =  
4 -4
3 1
 

=  

2A = 2 
15
22
 
= 
210
44
 

C = 2A + B

C = 
210
44
 
+ 
4-4
31
 
= 
66
75
 

C = 

 
66
75
 

 



5)  

If

A= 
66
33
 
B= 
1-1
22
 
Find the matric         C = 2A + B

C =


 
Answer: 13 Answer: 11
Answer: 8 Answer: 8


SOLUTION 1 :

 

 
A
 
=  
66
33
 
B =  
1 -1
2 2
 

=  

2A = 2 
66
33
 
= 
1212
66
 

C = 2A + B

C = 
1212
66
 
+ 
1-1
22
 
= 
1311
88
 

C = 

 
1311
88
 

 



6)  

If

A= 
64
45
 
B= 
3-4
51
 
Find the matric         C = 2A + B

C =


 
Answer: 15 Answer: 4
Answer: 13 Answer: 11


SOLUTION 1 :

 

 
A
 
=  
64
45
 
B =  
3 -4
5 1
 

=  

2A = 2 
64
45
 
= 
128
810
 

C = 2A + B

C = 
128
810
 
+ 
3-4
51
 
= 
154
1311
 

C = 

 
154
1311
 

 



7)  

If

A= 
26
33
 
B= 
1-3
51
 
Find the matric         C = 2A + B

C =


 
Answer: 5 Answer: 9
Answer: 11 Answer: 7


SOLUTION 1 :

 

 
A
 
=  
26
33
 
B =  
1 -3
5 1
 

=  

2A = 2 
26
33
 
= 
412
66
 

C = 2A + B

C = 
412
66
 
+ 
1-3
51
 
= 
59
117
 

C = 

 
59
117
 

 



8)  

If

A= 
14
43
 
B= 
4-4
42
 
Find the matric         C = 2A + B

C =


 
Answer: 6 Answer: 4
Answer: 12 Answer: 8


SOLUTION 1 :

 

 
A
 
=  
14
43
 
B =  
4 -4
4 2
 

=  

2A = 2 
14
43
 
= 
28
86
 

C = 2A + B

C = 
28
86
 
+ 
4-4
42
 
= 
64
128
 

C = 

 
64
128
 

 



9)  

If

A= 
54
23
 
B= 
1-1
52
 
Find the matric         C = 2A + B

C =


 
Answer: 11 Answer: 7
Answer: 9 Answer: 8


SOLUTION 1 :

 

 
A
 
=  
54
23
 
B =  
1 -1
5 2
 

=  

2A = 2 
54
23
 
= 
108
46
 

C = 2A + B

C = 
108
46
 
+ 
1-1
52
 
= 
117
98
 

C = 

 
117
98
 

 



10)  

If

A= 
15
22
 
B= 
4-1
43
 
Find the matric         C = 2A + B

C =


 
Answer: 6 Answer: 9
Answer: 8 Answer: 7


SOLUTION 1 :

 

 
A
 
=  
15
22
 
B =  
4 -1
4 3
 

=  

2A = 2 
15
22
 
= 
210
44
 

C = 2A + B

C = 
210
44
 
+ 
4-1
43
 
= 
69
87
 

C = 

 
69
87