Matrices — Test

Question 1

In the matrix, what is the value of t sub 32 ? cap t is equal to the 4 by 3 matrix, row 1, column 1, 2 column 2, 21 column 3, 9 row 2, column 1, 1 column 2, 0 column 3, 5 row 3, column 1, 16 column 2, 8 column 3, 4 row 4, column 1, 0 column 2, 32 column 3, 7

Revolt · Accepted Answer

8

Question 2

Each column of the matrix cap A is equal to the 2 by 4 matrix, row 1, column 1, 1 column 2, 6 column 3, 6 column 4, 1 row 2, column 1, 1 column 2, 1 column 3, 5 column 4, 5 represents a vertex of a rectangle on the coordinate plane. If Fan scales the rectangle by finding 4 cap A , what are the vertices of the scaled rectangle?

Revolt · Accepted Answer

open paren 4 comma 4 close paren comma open paren 24 comma 4 close paren comma open paren 24 comma 20 close paren comma open paren 4 comma 20 close paren

Question 3

What is the product? 3 times the 2 by 2 matrix, row 1, column 1, negative 6 column 2, negative 11 row 2, column 1, negative 14 column 2, negative 9

Revolt · Accepted Answer

the 2 by 2 matrix, row 1, column 1, negative 18 column 2, negative 33 row 2, column 1, negative 42 column 2, negative 27

Question 4

Printer B uses 15 dollars in ink every hour. What is the ink cost for each card coming from printer B?

Revolt · Accepted Answer

0 point 5 0 dollars

Question 5

Which matrix shows the difference of January and February?

Revolt · Accepted Answer

the 1 by 4 matrix, row 1, column 1, 5 column 2, 0 column 3, 8 column 4, 5

Matrices — Test Answers

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