Solving problems involving mixed operations

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Answer explanation

When adding or subtracting matrices, their dimensions need to be equal, or else the answer is undefined

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Hasil dari  $A-C+2B$  adalah ....

• (a)

• (b)

• (c)

• (d)

• (e)

 $\frac{\ \ 5\ \left|\ \ 10\ \ \right|\ \ 15\ \ \left|\ \ \ x\ \ \ \right|\ \ 50\ \ \left|\right|}{\ \ 4\ \left|\ \ 8\ \ \ \ \right|\ \ 12\ \ \left|\ \ 32\ \ \right|\ \ 40\ \ \left|\right|}$ 

 What is the value of x?

• 19

• 20

• 40

• 48

Find 3B - 2A

• [22 25]

  [17 3]

• [14 5]

  [-11 3]

• [-14 5]

  [11 -3]

• none of these

Complete Question #7 from the "Matrices Quizizz 1" Handout.

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• None of the above