Regular pentagon means the shape with 5 sides which their lengths are equal to each other.
so, if the total perimeter of the pentagon is 10s - 20,
we can find the length of each side by dividing it by 5.
(10s - 20) / 5
we can expand this equation by dividing each number in the bracket by 5
= 2s - 4
Therefore, the answer should be D.
On the line segment 
, 
depends only on 
:
Find the critical points of 
.
At this critical point, we have
Check the value of at the endpoints of the line segment.
So we have
Answer:
780
Step-by-step explanation:
For this we have to find the 20% of $975.00
= 20% of 975
= 20/100 (975) (Removing percentage sign gives us 100)
= 0.2 (975)
= 195 (that's the 20% of 975 which is taken)
NOW,
Subtract 195 and 975 to find the remaining amount
= 975 - 195
=780 Answer
