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Chapter 4: Q49. (page 166)

State the dimensions of each matrix.

49.750−8389−1154211

Short Answer

Expert verified

The dimension of the matrix is 4×3.

Step by step solution

01

- Define the dimension of the matrix

A matrix A with m rows and n columns is a matrix of dimensions m×n.

02

- State an example

Let us consider a matrix A=12−3014. Clearly, matrix A has 2 rows and 3 columns, therefore, the dimension of matrix A will be 2×3.

03

- State the dimension of 750−8389−1154211

In order to state the dimension of the matrix 750−8389−1154211, observe that the matrix has 4 rows and 3 columns, therefore, the dimension of matrix will be 4×3.

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Most popular questions from this chapter

Use matricesA, B, Cand Dto find the following.

A=57−163−9,  B=835144,  C=04−257−1,  D=6290−30

28. 3C-4A+B

Solve each equation.

3x-5x+y129z=108123x+y

Use matricesA, B, Cand Dto find the following.

A=57−163−9,  B=835144,  C=04−257−1,  D=6290−30

25. D-B

For exercises 30-32, use the following information. The Cookie Cutter Bakery records each type of cookie sold at three of their branch stores. Two days of sales are shown in the spreadsheets below.

30. Write a matrix for each day’s sales.

For exercise 43-45, use the following information.

The parking garage at Burrough’s Department store charges $1.50 for each hour or fraction of an hour for parking.

45. Jada went shopping at Burrough’s Department store yesterday. She left her car in the parking garage for two hours and twenty-seven minutes. How much did Jada pay for parking?
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