AnswersPrecalculusCramer's Rule

Cramer's Rule Answers

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A matrix with an entire row of zeroes indicates the system .

A
is inconsistent
B
is dependent
C
has a unique solution
5
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Which operation would make the first element in row 2 equal 0?

A
Add row 1 and row 2 and insert the result in row 2.
B
Add row 1 and row 2 and insert the result in row 1.
C
Subtract row 1 and row 2 and insert the result in row 2.
D
Subtract row 1 and row 2 and insert the result in row 1.
6

This system .

A
is inconsistent
B
is dependent
C
has a unique solution
7

Which of the following are valid row operations for augmented matrices?Switch positions of two rows.Add elements of one row to another row.Multiply elements of one row by another row.Multiply elements of one row by a scalar.Raise elements of a row to a power.

A
Switch positions of two rows.
B
Add elements of one row to another row.
C
Multiply elements of one row by another row.
D
Multiply elements of one row by a scalar.
E
Raise elements of a row to a power.

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