I need to see the prices it u want an answer:)
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
Answer: 31
How: If there are two negative signs like this, you would connect them together and make it into a addition sign where you then can add them.
The slope-intercept form of the given equation ( 8x 10y=-30 ) is y = (-4/5)x - 3.
<h3>What is the slope-intercept form of the given equation?</h3>
The slope-intercept form is expressed as;
y = mx + b
Where m is the slope and b is the y-intercept.
Given the equation in the question;
8x + 10y = -30
To convert to slope intercept form, we make y the subject of the formula and simplify.
8x + 10y = -30
10y = -8x - 30
Divide each term by 10
10y/10 = -8x/10 - 30/10
y = -4x/5 - 3
y = (-4/5)x - 3
Therefore, the slope-intercept form of the given equation ( 8x 10y=-30 ) is y = (-4/5)x - 3.
Learn more about slope and y-intercept here: brainly.com/question/19824331
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Answer:
7 5/12
Step-by-step explanation:
