I assume you know about the dot product, and that for two vectors
and
, the angle between them
satisfies

Then the vectors are parallel if the angle between them is 0 or 180 degrees (0 or pi radians), which would make
or
, respectively.
Part A)



Then the angle between
is such that

so these vectors are parallel ("antiparallel", more specifically, which means they are parallel but point in opposite directions).
Part B) involves the same computations:

has the same components but differing by sign and order, as
; its magnitude remains the same, though:



which is neither 0 nor pi, which means these vectors are not parallel.
Answer:
1. 5/6 ≥ 2/3
2. 1/5 ≤ 2/8
3. 9/10 ≥ 6/8
4. I can't see it's out of the pic
5. 7/8 ≥ 5/10
6. 2/5 ≥ 2/6
7. 1/3 ≤ 3/8
8. I can't see it's out of the pic.
9. 8/10 ≥ 3/4
10. 3/8 ≤ 11/12
11. 2/3 ≤ 10/12
12. Can't see :(
13. 3/8 ≤ 7/8
14. 2/4 = 4/8
15. 6/8 ≥ 8/12
16. Can't see
Step-by-step explanation: All you have to do is divide the numerator by the denominator to make it into a decimal. For instance....
5/6 = approximately 0.83
I hope this helps you! It took forever....
Answer:
32 packs of crayons
Step-by-step explanation:
480 divided by 15 equals 32.
I hope this diagram explains it and helps you :)
Donde esta la foto para poder ayudarte ??