Matrices worksheets
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Q. Find B-A
answer choices
-3 1
7 -1
7 -1
1 0
1 -4
1 -4
4 0
-6 0
-6 0
not possible because rows do not match columns
Q. What are the dimensions of this matrix?
answer choices
2 x 3
3 x 2
6 x 1
1 x 6
Q.
How is the entry of a matrix identified?
answer choices
Row x Column
Column x Row
Row only
Column only
Q. Multiply
answer choices
20 15 -10
30 -5 0
30 -5 0
-20 15 -10
30 -5 0
30 -5 0
1 8 3
11 4 5
11 4 5
20 -15 10
-30 5 0
-30 5 0
Q. What do m, n, p and q equal in this scalar matrix multiplication?
answer choices
m=8, n=9, p=-4, q=4
m=15, n = -45, p=20, q=-5
m=20, n=-5, p=15, q=-45
m=-5, n=20, p=-45, q=15
Q. Find A+B
answer choices
8 10
8 1
8 1
12 25
7 1
7 1
10 30
0 1
0 1
can't add two together because the rows dont match columns
Q. Dimensions?
answer choices
a
b
c
d
Q. Multiply
answer choices
25
25
5
25
5
-25
25
-5
25
-5
-10
-10
-6
-10
-6
10
10
6
10
6
Q. Find the values of x, y and z.
answer choices
w = 13, x = 4, y = 7, z = 23
w = 13, x = -4, y = 11, z = 23
w = 13, x = 4, y = 11, z = 23
w = 13, x = 4, y = 11, z = 17
Q. Add
answer choices
11 8
-4 2
-4 2
3 2
-6 -6
-6 -6
-3 2
-4 -6
-4 -6
10 8
-6 2
-6 2
Q. Subtract
answer choices
-5
-8
3
10
-8
3
10
-9
8
3
2
8
3
2
5
-8
3
10
-8
3
10
-5
8
3
2
8
3
2
Q. What are the dimensions of this matrix?
answer choices
3x1
1x3
3x3
1x1
Q. How many rows are in a 7 x 3 matrix?
answer choices
7
3
21
10
Q. How many columns are in a 5 x 4 matrix?
answer choices
5
4
20
9
Q. Subtract
answer choices
3 -8
0 -1
0 -1
3 -4
8 -13
8 -13
-3 8
0 1
0 1
3 -8
-8 1
-8 1
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