Let V=(5,-2) and W=(4,10)
Which of the following is true?
Check all that apply.
W= -2 (-2, -5)
(V)(W) =20
V and W are perpendicular
the y-component of W is 10
Pre Calc Question>>> 10 Points Rewarded?
2016-04-14 5:05 am
回答 (1)
2016-04-14 1:16 pm
✔ 最佳答案
W = -2 ( -2, -5 ) = ( 4,10 ) , trueV ．W = 5*4 + (-2)*10 = 0
So V ．W = 20 is false
V ．W = 0 , so :
" V and W are perpendicular " , true
the y-component of W is 10 , true
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