<u>Answer:</u>
a = 8.1
<u>Step-by-step explanation:</u>
Use the cosine rule:

Substituting the values:

⇒ 
⇒ 
Answer:
SYNTAX PROPERTY
Step-by-step explanation:
6/10 and 13/20, sorry i would explain this but its late, cheers.
Hope this Helps.
Answer:
Step-by-step explanation:
Parking charge for 2 hours = $ 9
Parking charge for 1 hour = 9/2 = $ 4.50
c = 4.50*p
c = 4.5p