Exam 9: Matrices and Determinants

Solve the problem. -A basketball fieldhouse seats 15,000. Courtside seats sell for $9, end zone for $6, and balcony for $5. Total for a sell-out is $89,000. If half the courtside and balcony and all end zone seats are sold, ticket sales total $50,500. How many of each type of seat are there?

(Multiple Choice)

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Question 81

Find a matrix A and a column matrix B that describe the following tables involving credits and tuition costs. Find the matrix product AB, and interpret the significance of the entries of this product. -

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Question 82

Solve the problem. -Factory A makes 9 model-A, 5 model-D, and 8 model-M train sets. Factory B makes 11 model-A, 6 model-D, and 8 model-M train sets. If model-A sells for $15, model-D for $23, and model-M for $35, write a 2 x 3 matrix To summarize the income by model.

(Multiple Choice)

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Question 83

Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. -x + 3y = -8 -14x - 4y = -2

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Question 84

Solve the problem. -Barnes and Able sell life, health, and auto insurance. Sales for May and June are given in the matrices. Life Health Auto Find the matrix that would give total sales.

(Multiple Choice)

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Question 85

Solve the system of equations corresponding to the given matrix equation. -

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Question 86

Find the determinant of the given matrix. -

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Question 87

Find the values that make the equation true. -

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Question 88

Solve the system, using Cramer's rule, if possible. -5x - y + 5z = 73 6x + 6y - 8z = 12 -7x - 8y + z = -96

(Multiple Choice)

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Question 89

Find the determinant of the given matrix. -

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Question 90

The size of two matrices is given. Find the size of the product AB and the product BA, if the products exist. -A is 3 × 4, B is 4 × 3.

(Multiple Choice)

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Question 91

Solve the system using Gaussian elimination. -

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Question 92

Find the determinant of the given matrix. -

(Multiple Choice)

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Question 93

Determine the size of the matrix. -[3 -6 7 7]

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Question 94

Given matrices A and B, find the indicated matrix if possible. - Find AB.

(Multiple Choice)

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Question 95

Find the determinant of the given matrix. -

(Multiple Choice)

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Question 96

Find the determinant of the given matrix. -

(Multiple Choice)

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Question 97

Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. -0.3x - 0.4y - 0.1z = 9 -0.5x + 0.6y + 0.1z = -13 0.1x + 0.3y - 0.2z = 2

(Multiple Choice)

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Question 98

Find the product. -

(Multiple Choice)

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Question 99

Find the inverse of the matrix, if possible. -

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Question 100

Showing 81 - 100 of 218

Solve the problem. -A basketball fieldhouse seats 15,000. Courtside seats sell for $9, end zone for $6, and balcony for $5. Total for a sell-out is $89,000. If half the courtside and balcony and all end zone seats are sold, ticket sales total $50,500. How many of each type of seat are there?

Find a matrix A and a column matrix B that describe the following tables involving credits and tuition costs. Find the matrix product AB, and interpret the significance of the entries of this product. -

Solve the problem. -Factory A makes 9 model-A, 5 model-D, and 8 model-M train sets. Factory B makes 11 model-A, 6 model-D, and 8 model-M train sets. If model-A sells for $15, model-D for $23, and model-M for $35, write a 2 x 3 matrix To summarize the income by model.

Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. -x + 3y = -8 -14x - 4y = -2

Solve the problem. -Barnes and Able sell life, health, and auto insurance. Sales for May and June are given in the matrices. Life Health Auto Find the matrix that would give total sales.

Solve the system of equations corresponding to the given matrix equation. -

Find the determinant of the given matrix. -

Find the values that make the equation true. -

Solve the system, using Cramer's rule, if possible. -5x - y + 5z = 73 6x + 6y - 8z = 12 -7x - 8y + z = -96

Find the determinant of the given matrix. -

The size of two matrices is given. Find the size of the product AB and the product BA, if the products exist. -A is 3 × 4, B is 4 × 3.

Solve the system using Gaussian elimination. -

Find the determinant of the given matrix. -

Determine the size of the matrix. -[3 -6 7 7]

Given matrices A and B, find the indicated matrix if possible. - Find AB.

Find the determinant of the given matrix. -

Find the determinant of the given matrix. -

Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. -0.3x - 0.4y - 0.1z = 9 -0.5x + 0.6y + 0.1z = -13 0.1x + 0.3y - 0.2z = 2

Find the product. -

Find the inverse of the matrix, if possible. -

Equations, Inequalities, and Modeling

Functions and Graphs

Polynomial and Rational Functions

Exponential and Logarithmic Functions

The Trigonometric Functions

Trigonometric Identities and Conditional Equations

Applications of Trigonometry

Systems of Equations and Inequalities

The Conic Sections

Sequences, Series, and Probability

Basic Algebra Review

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