Matrices and Row Operations Answers

Which matrix represents the solution to the system of equations below?

A shipping company charges a flat rate of $7 for packages weighing five pounds or less, $15 for packages weighing more than five pounds but less than ten pounds, and $22 for packages weighing more than ten pounds. During one hour, the company had 13 packages that totaled $168. The number of packages weighing five pounds or less was three more than those weighing more than ten pounds. The system of equations below represents the situation.Which matrix can be used to show the number of packages in the different weight classes during that hour?

Kamal wrote the augmented matrix below to represent a system of equations.Which matrix results from the operation ?

The matrix below represents a system of equations.Which matrix represents ?

Dante is solving the system of equations below. He writes the row echelon form of the matrix. Which matrix did Dante write?

A student performed row operations on a matrix as shown below.Which operations did the student perform?

The augmented matrix below represents a system of equations.Which matrix results from the operation ?

A student wrote the matrix below to represent the solution to a system of equations. Which of the following describes the solution?

Juanita wants to perform row operations on the augmented matrix for the system below.Which matrix should Juanita use to perform the operations?

The drama club at a local high school sells adult, teen, and child tickets for a school play. The matrix below represents the tickets sold and the total cost of the tickets for three performances.Which of the following is the result of performing the row operation on this matrix?