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Ad libitum [116K]
2 years ago
5

Select the correct answer from the drop-down menu. A=-2[-6 4, 3 7, 12 10], B=3[-2 2 8, 8 5 6], 3C=3[-2 8, 2 5, 8 6] and D=-1[-12

8, 6 14, 24 20]. (drop down menu) are equal matrices.
Mathematics
1 answer:
max2010maxim [7]2 years ago
6 0

Answer:

A and D are equal

Step-by-step explanation:

Given

A=-2[-6, 4, 3 ,7, 12, 10]

B=3[-2, 2, 8, 8, 5, 6]

3C=3[-2, 8, 2, 5, 8, 6]

D=-1[-12, 8, 6, 14, 24, 20].

Required

The equal matrices

First, we simplify the given expressions

A=-2[-6, 4, 3 ,7, 12, 10]

Open bracket

A= [12, -8, -6 ,-14, -24, -20]

Next:

B=3[-2, 2, 8, 8, 5, 6]

Open bracket

B=[-6, 6, 24, 24, 15, 18]

Next:

3C=3[-2, 8, 2, 5, 8, 6]

Divide by 3

C=[-2, 8, 2, 5, 8, 6]

Lastly:

D=-1[-12, 8, 6, 14, 24, 20].

Open bracket

D=[12, -8, -6, -14, -24, -20].

By comparison:

A = D=[12, -8, -6, -14, -24, -20].

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