Answer:

Step-by-step explanation:
Using the general equation
, we already know that
and
, but we need to find
from the period:

Hence, the cosine function is 
Divide the circumference by pi, then divide that by 2, then you would have the radius, and the area is r squared multiplied by pi
Answer:
<em>P = 2x +2y + 14</em>
Step-by-step explanation:
Answer:
1/5k-2/3j and -2/3j+1/5k
Step-by-step explanation:
This is because the sign of both of the terms stay the same and the fractions and variables stay the same for each term as well.