Answer:
C) 549 km²
Step-by-step explanation:
The area of the regular pentagon is given by ...
A = (1/2)Pa
where P represents the perimeter, and 'a' represents the apothem (6.2 km). Of course, the perimeter is 5 times the side length.
The lateral area is the product of the perimeter and the height:
LA = Ph
Using these formulas, and recognizing the total area includes two (2) pentagons, we have ...
total area = (LA) +2(A) = Ph +2(1/2)Pa = P(h +a)
= (45 km)(6 km +6.2 km) = 549 km^2
Answer:
C. None of the Above
Step-by-step explanation:
None of the given monomials have all of 4 and x and y as factors.
___
They can all be divided, but the result will be a fraction--which is probably not what is intended. None can be divided "evenly" by 4xy.
7a + 6c + 9a - 15c
-- Look for all the 'a's 7a, 9a
-- Addum up 16a
-- Look for all the 'c's 6c, -15c
-- Addum up -9c
-- Write the results 16a - 9c
X: -3
y: -2
(use photo for your steps)
Answer:
Step-by-step explanation:
Write down the equation and solve for x.
Best Regards!