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nikdorinn [45]
3 years ago
9

Mr.Richard has an orchard of length and breadth 280m and 200m respectively. He wants to fence it with 4 rounds of barbed wire. F

ind the cost of fencing at $35 per metre.
Mathematics
1 answer:
sesenic [268]3 years ago
8 0

Answer:

$109.71

Step-by-step explanation:

first we find the perimeter

=2(280+200)

=2×480

=960m

now we multiply it by 4 as he wants it 4 times around

960×4

3840

now we find the fencing cost

since 35 per meter we divide it by 35

3840/35

=$<u>109.71</u>

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Part A
The given line passes through (-2,2) and it is parallel to the line

4x - 3y - 7 = 0


We need to determine the slope of this line by writing it in slope -intercept form.


3y = 4x - 7


y =  \frac{4}{3} x -  \frac{7}{3}
The slope of this line is
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The line parallel to this line also has slope

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The equation is

y =  \frac{4}{3} x + c


We substitute (-2,2)

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PART B


The given line is


4x - 3y - 7 = 0




The slope of this line is
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The slope of the line perpendicular to it is

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The equation of the line is

y =  -  \frac{ 3}{4} x + c




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2=  -  \frac{ 3}{4} ( - 2) + c


2=  \frac{ 3}{2}  + c



c = 2 -  \frac{3}{2}  =  \frac{1}{2}


The equation of the perpendicular line is


y=  -  \frac{ 3}{4} x +  \frac{1}{2}
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