Answer:
Step-by-step explanation:

Hence proved!
Answer:
$16.10
Step-by-step explanation:
Simply take the original cost and multiply it by the percentage to get the tip amount then add it all together.
14 × 15% = 2.1
14 + 2.1 = 16.1
This means the haircut would cost a total of $16.10.
Multiply 8 by 60 and you will get 480 feet per minute.
Answer:
a) 
b) 
c) 
Step-by-step explanation:
a)
AB, OB, OA are vectors.

Normalizing AB: 
b)
OM, OA, OB are vectors.

So, 
c)

Hence,
