<h2>
Answer:</h2>
<h2>
Step-by-step explanation:</h2>
In this problem we have two vectors:
So we need to find two things:
and:
FIRST:
In this case we have the multiplication of vectors by scalars. A scalar is a simple number, so:
SECOND:
If we name:
Then, is the magnitude of the vector 
. Therefore:
There are 10 doses. 4x5=20/2=10
The answer should be y=-1/7x
The equation is
(A ≠ B)
A is the first number, ratio, rate, etc. , and B is the second.
The ≠ symbol means "does not equal", so the equation means:
[ Ratio A is NOT equal to Ratio B. ]
