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 
<span>The answer should be (12x + 20) (2x + 5)</span>
Step-by-step explanation:
0 is right in the middle of all negative and all positive numbers.
0 is therefore larger than any negative number and smaller than any positive number.
and 0×n = 0, always, no matter what n is.
-0 = +0 = 0.
so, of course, only
4.1m > -16.4
is correct.
0 is not greater than 16.4.
0 is not smaller than -16.4.