Answer:
5
Step-by-step explanation:
You are looking for x so what you are really looking for is what times 4 =20 and that is 5.
5x4=20
Answer:
B
Step-by-step explanation:
pls mark me brainless pls
My choice to reflect this would be over the y axis. That would be (-1,3) for the bottom left hand corner on the original image.
(a)
Given:
is in xy plane and
is in the direction of k.
|a|=6 units, |b|=3 and θ = 90°
|a × b| = |a| × |b| sinθ
= |a| × |b| sin90°
= 6 × 3 × 1
|a × b| = 18
(b)
Let
is perpendicular to both
.
In this case,
x-component of
is positive.
y-component of
is negative.
z-component of
is zero.