- #1
princiebebe57
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What is the length of the resultant vector of combining 2A - 3B where vector A= 4i + 3j and vector B= 9i + 8j?
No, what's 2A and 3B?princiebebe57 said:is it -19i + 30j?
Yep -- now do the subtraction.princiebebe57 said:2A = 8i + 6j
3B = 27i + 24j
is that correct?
Yeah. What's it equal?princiebebe57 said:so (8i + 6j)-(27i + 24j)?
Yeah -- and the length (magnitude) is...princiebebe57 said:is it -19i - 18j?
princiebebe57 said:i'm stuck at that!
Yep -- to 3 decimal places.princiebebe57 said:so is it 26.172?
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