Find the mass and the center of mass of the lamina occupying the region R, where R is the triangular region with vertices 
and having the mass density 
Definitions:
Return on Equity
A financial ratio indicating the relative profitability of a company, calculated by dividing net income by shareholder equity.
Stockholders' Equity
The ownership stake of shareholders in a corporation, calculated by subtracting liabilities from the total assets, representing the remaining interest.
Income Statement
A report indicating a business's income, outgoings, and net earnings during a defined timeframe.
Income Tax Expense
The amount of money a company or individual owes to the government based on their taxable income for a given period.
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