Question

Find a ⋅ b.

a = <2, 4>, b = <2, 5>

Answer 1

a\(_1\)b\(_1\) + a\(_2\)b\(_2\) = ________

Answer 2

18

Answer 3

Not quite. \(a_1=2\), \(b_1=2\), \(a_2=4\), and \(b_2=5\).
\[(2\times2)+(4\times5)\not=18\]

Answer 4

4,20=24

Answer 5

i got mixed up so the answer is 24

Answer 6

Yes.

Answer 7

thank you!

Answer 8

Determine whether the vectors u and v are parallel, orthogonal, or neither.

u = <6, -2>, v = <2, 6>

Answer 9

ow do i find this?