Two vectors 
and 
are given by 
and 
. The scalar product of 
and a third vector 
is −16. The scalar product of 
and 
is +18. The z component of 
is 0. What is the magnitude of 
?
Definitions:
Warranty Cost
Expenses incurred by a company to repair, replace, or refund products that are found to be defective after purchase.
Expense Recognition Principle
An accounting concept that expenses should be recognized in the period when the revenues generated by such expenses are recognized.
Payroll Tax Expense
Payroll tax expense refers to the taxes that employers are required to pay on behalf of their employees, such as Social Security and Medicare taxes in the United States.
Estimated Warranty Costs
The projected expenses a company expects to incur for repairing or replacing products under warranty.
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