It’s d because it’s d because it’s d because it’s d
Let's check the dot product .
v.w = 5(4)-2(10) = 20 -20 =0
So the dot product is not 20 . And since the dot product is zero, so they are perpendicular.
And the y component of w is 10.
So correct options are first and third .
35+70 = 105
180-105 = 75
x = 75
