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Chapter 4: Q8. (page 174)

Perform the indicated matrix operations.8.

5[鈭�2450鈭�47]

Short Answer

Expert verified

The answer is[鈭�1020250鈭�2035]

Step by step solution

01

- State the definition of a matrix.

A rectangular array of numbers arranged in rows and columns is called a matrix.

02

- Solve the matrix.

To evaluate the matrix use scalar multiplication.

Scalar multiplication is the method in which matrix is multiplied by a constant called scalar.

The matrix is:5[鈭�2450鈭�47]

Here, 5 is the scalar. Multiply each element of the matrix by 5.

5[鈭�2450鈭�47]=[5脳鈭�25脳45脳55脳05脳鈭�45脳7]=[鈭�1020250鈭�2035]

03

- State the conclusion.

Therefore, the resultant matrix is[鈭�1020250鈭�2035]

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Most popular questions from this chapter

Give an example of two matrices whose sum is zero matrix.

Answer the question that was posed at the beginning of the lesson.

How are matrices used to make decisions?

Include the following in your answer:

  • The circumstances under which each vehicle best fits a person鈥檚 needs, and
  • An example of how matrices are used in newspapers or magazines.

Find each product, if possible.

[4鈭�2鈭�7635]鈰�[鈭�253]

Solve each system of equations.

3a+2b=275a-7b+c=5-2a+10b+5c=-29

Use matricesA, B, Cand Dto find the following.

A=57鈭�163鈭�9,鈥夆赌�B=835144,鈥夆赌�C=04鈭�257鈭�1,鈥夆赌�D=6290鈭�30

24. A+B
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