Matrices and Row Operations — Quiz Answers

The drama club at a local high school sells adult, teen, and child tickets for a school play. The matrix represents the tickets sold and the total cost of the tickets for three performances. the 3 by 4 matrix, row 1, column 1, 3 column 2, 12 column 3, 6 column 4, 102 row 2, column 1, 6 column 2, 18 column 3, 6 column 4, 162 row 3, column 1, 0 column 2, 15 column 3, 5 column 4, 85 Which of the following is the result of performing the row operation negative 2 cap r 1 plus cap r 2 rightarrow cap r 2 on this matrix?

The augmented matrix below represents a system of equations. the 3 by 4 matrix, row 1, column 1, negative 1 column 2, 1 column 3, 2 column 4, 7 row 2, column 1, negative 3 column 2, 2 column 3, 1 column 4, 4 row 3, column 1, 2 column 2, 1 column 3, 1 column 4, 7 Which matrix results from the operation cap r 1 left right arrow cap r 2 ?

Kamal wrote the augmented matrix to represent a system of equations. the 3 by 4 matrix, row 1, column 1, 1 column 2, 0 column 3, 1 column 4, negative 1 row 2, column 1, 1 column 2, 3 column 3, negative 1 column 4, negative 9 row 3, column 1, 3 column 2, 2 column 3, 0 column 4, negative 2 Which matrix results from the operation negative 3 cap r 2 left right arrow cap r 2 ?

Juanita wants to perform row operations on the augmented matrix for the system. x plus 2 y is equal to 3 negative x plus y plus z is equal to 2 y minus 2 z is equal to negative 3 Which matrix should Juanita use to perform the operations?

A student performed row operations on a matrix as shown. Student's Work [−41240−1313245]→[−41240−13130107] Which operations did the student perform?

The matrix represents a system of equations. the 3 by 4 matrix, row 1, column 1, 2 column 2, negative 1 column 3, negative 3 column 4, negative 20 row 2, column 1, negative 2 column 2, negative 6 column 3, 6 column 4, negative 4 row 3, column 1, 0 column 2, 3 column 3, negative 2 column 4, negative 9 Which matrix represents 1 half cap r 2 plus cap r 3 rightarrow cap r 3 ?

When Lydia performed an operation on the matrix, she forgot to include one element. the 3 by 4 matrix, row 1, column 1, 1 column 2, 2 column 3, 3 column 4, 5 row 2, column 1, 5 column 2, 3 column 3, negative 1 column 4, negative 11 row 3, column 1, 3 column 2, 2 column 3, negative 2 column 4, negative 13 ce bond right arrow the 3 by 4 matrix, row 1, column 1, 1 column 2, 2 column 3, 3 column 4, 5 row 2, column 1, 0 column 2, b column 3, negative 16 column 4, negative 36 row 3, column 1, 3 column 2, 2 column 3, negative 2 column 4, negative 13 What is the value of the unknown element, b ?

Which operation can be used with the augmented matrix? the 3 by 4 matrix, row 1, column 1, 3 column 2, negative 2 column 3, 1 column 4, 15 row 2, column 1, 1 column 2, 5 column 3, 8 column 4, 15 row 3, column 1, negative 2 column 2, negative 1 column 3, 3 column 4, 1

The matrix represents a system of equations. the 3 by 4 matrix, row 1, column 1, 2 column 2, negative 1 column 3, negative 3 column 4, negative 20 row 2, column 1, negative 2 column 2, negative 6 column 3, 6 column 4, negative 4 row 3, column 1, 0 column 2, 3 column 3, negative 2 column 4, negative 9 Which matrix represents 1 half cap r 2 plus cap r 3 rightarrow cap r 3 ?

The drama club at a local high school sells adult, teen, and child tickets for a school play. The matrix represents the tickets sold and the total cost of the tickets for three performances. the 3 by 4 matrix, row 1, column 1, 3 column 2, 12 column 3, 6 column 4, 102 row 2, column 1, 6 column 2, 18 column 3, 6 column 4, 162 row 3, column 1, 0 column 2, 15 column 3, 5 column 4, 85 Which of the following is the result of performing the row operation negative 2 cap r 1 plus cap r 2 rightarrow cap r 2 on this matrix?