Answer:
Step-by-step explanation:
Given
See attachment for illustration
Required
Equation to find x
The relationship between angle 
and side lengths x and 10 inches is by tangent formula which is given by:
So, we have:
Make x the subject
The area is:
A = x * y = 20000
The cost function is:
C = 2.50 (2x) +3.50 (2y)
Rewriting we have:
C = 5x + 7y
Writing as a function of x we have:
C = 5x + 7 (20000 / x)
Rewriting:
C (x) = 5x + 140000 / x
We derive:
C '(x) = 5-140000 / x ^ 2
We equal zero and clear x:
0 = 5-140000 / x ^ 2
140000 / x ^ 2 = 5
x ^ 2 = 140000/5
x = root (140000/5)
x = 167.33 feet
Therefore the cost is:
C (167.33) = 5 * (167.33) + 7 * (20000 / 167.33)
C (167.33) = 1673.32 $
Answer:
The cost of the least expensive fence is:
$ 1673.32
_______ * 40 = 15.
_______ = 15/40 //Divide both side by 40.
15/40 = 3/8 //Reduced by 5.
Answer: 3/8
Check: 3/8 * 40
120/8 = 15
Answer:
im not sure but i rember having this question i think its 770
Step-by-step explanation:
Answer:
The answer is c
Step-by-step explanation:
My college brother told me this is the answer if it isn't I'm sorry but it's his fault
