Answer:
What
Step-by-step explanation:
The complete question is
A fence must be built to enclose a rectangular area of 5000ft^2. Fencing material costs $1 per foot for the two sides facing north and south and 2$ per foot for the other two sides. Find the cost of the least expensive fence.
Answer:
Total cost will be $400
Step-by-step explanation:
Let x = be other side
y = north and south side
Area = x*y = 5000
Perimeter of the rectangle = 2x + 2y
cost of fencing = 2(1)*5000/x + 2*2x
= 10000/x + 4x
now to get the least we will take the derivative of this
C'(x) = 10000(-1/x^2) + 4 =0
x^2 = 2500
x= 50ft cost = 2*$2*50 = $200
y= 100ft cost = 2*$1*100 = $200
Total cost = $400
-35
Since the absolute value symbols are not around the negative sign, it is not effected. The absolute value of 35 is 35 and since the negative is not in the symbols, the answer is -35
Does it give you any more details?? if not it would be undefined for parallel and zero for perpendicular.<span />
The answer to this exponential expression is 439.
To solve this expression, we need to use pemdas (parenthesis, exponents, multiplication, division, addition, subtraction). That measn that we first have to do the parenthesis.
7 * (8)² - 3²
Now we have to do exponents.
7 * 64 - 9
Now we have to do the multiplication (because of the order of pemdas)
448 - 9
Finally, we do the subtraction
439. That means that the answer to this exponential expression is 439.