Answer:

Since the angle between the two vectors is not 180 or 0 degrees we can conclude that are not parallel
And the anfle is approximately 
Step-by-step explanation:
For this case first we need to calculate the dot product of the vectors, and after this if the dot product is not equal to 0 we can calculate the angle between the two vectors in order to see if there are parallel or not.
a=[1,2,-2], b=[4,0,-3,]
The dot product on this case is:

Since the dot product is not equal to zero then the two vectors are not orthogonal.
Now we can calculate the magnitude of each vector like this:


And finally we can calculate the angle between the vectors like this:

And the angle is given by:

If we replace we got:

Since the angle between the two vectors is not 180 or 0 degrees we can conclude that are not parallel
And the anfle is approximately 
Answer:
$341 the selling price
Step-by-step explanation:
Cost $620
$620-45% ($279 profit)
$620-$279=$341 should be the selling price
Answer: I had this question on test I put D
I haven’t gotten it graded
Step-by-step explanation:
Answer:
He would need
cups of grapes
<span>2. Why are banks important to producers? (1 point)
Checking accounts give a way to take payments from customers.
Transactions no longer needed to be processed personally lessens time of work productivity that's why it's important to producers.
3. How do labor unions affect the economy? (1 point)
They increase demand by ensuring ethical production. </span>