The function of the length z in meters of the side parallel to the wall is A(z) = z/2(210 - z)
<h3>How to write a function of the length z in meters of the side parallel to the wall?</h3>
The given parameters are:
Perimeter = 210 meters
Let the length parallel to the wall be represented as z and the width be x
So, the perimeter of the fence is
P = 2x + z
This gives
210 = 2x + z
Make x the subject
x = 1/2(210 - z)
The area of the wall is calculated as
A = xz
So, we have
A = 1/2(210 - z) * z
This gives
A = z/2(210 - z)
Rewrite as
A(z) = z/2(210 - z)
Hence, the function of the length z in meters of the side parallel to the wall is A(z) = z/2(210 - z)
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For this , you use the distance formula
. based on the graph, use points (0,6) and (7,-2), plug them into the formula to get
and you get B, 10.63
Answer:
x=14/39, y=-121/39. (14/39, -121/39).
Step-by-step explanation:
7x+5y=-13
-2x-7y=21
---------------
2(7x+5y)=2(-13)
7(-2x-7y)=7(21)
------------------------
14x+10y=-26
-14x-49y=147
------------------
-39y=121
y=121/-39
y=-121/39
-2x-7(-121/39)=21
-2x+847/39=21
-2x=21-847/39
-2x=819/39-847/39
-2x=-28/39
2x=28/39
x=(28/39)/2
x=(28/39)(1/2)
x=28/78
simplify
x=14/39
The answer to that question is 5
