I’m sure the answer is B.
8/9
O=16H
H+H+O=water
18H =water molecules
so u can see ratio 16H/!8H=8/9
We need to find dot products of 2 vectors:
u·v = x1*x2 + y1*y2
u·v = 2*(-6) + 3*4 = -12 + 12 = 0
Another way to write dot product u·v = |u|*|v|*cos α.
Because the do product = 0, we can write
|u|*|v|*cos α = 0.
That means cos α = 0, and thus α=90⁰, so vectors v and u are orthogonal.
Answer:
hopefully this will help you on your journey!
Answer:2035.75
Step-by-step explanation:v=(3.14)(18)^2(6/3)
