Question

HUURRRYY!!!

Given u = ⟨2, –8⟩ and v = ⟨8, –2⟩, what is u · v?
–68
–60
0
32

Answer 1

D: 32

Explanation:

u = (2,-8)

v = (8,-2)

u * v = ((2 * 8) + (-8 * -2))

u * v = (16 + 16)

u * v = 32

Answer 2

2*8 + (-8)*(-2) = 16 + 16 = 32