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Mathematics 21 Online
OpenStudy (anonymous):

if p=12i-4j and q=-7i+8j calculate the value of each expression below without a calculator. Estimate any irrational answers to one decimal place. 1.) p-2q 2.)||p+q||

OpenStudy (anonymous):

is the 2nd question supposed to be an absolute value, or greatest integer function?

OpenStudy (anonymous):

absolute value. And for the first one you just combine like terms then set it all to equal p-2q right?

OpenStudy (anonymous):

so the answer for the first one would be 26i-20j right?

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