Compute the Determinant of the Matrix and State Whether an Inverse

question 78

Multiple Choice

Compute the determinant of the matrix and state whether an inverse matrix exists. Do not use a calculator.

• A) -4, yes
• B) -4, no
• C) 0, yes
• D) 0, no

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Definitions:

Return On Investment (ROI)

A measure of the profitability of an investment, calculated as the net profit from the investment divided by the cost of the investment.

Return On Investment (ROI)

A measure of profitability calculated by dividing net profit by the cost of investments.

Return On Investment (ROI)

A performance measure used to evaluate the efficiency of an investment by comparing its gain to its cost.

Contribution Margin Ratio

The proportion of revenue from each dollar of sales that goes toward covering fixed expenses and creating profit.