Xy = 940
<span>and </span>
<span>Cost = 5(2x) + 5y + 10y (I chose y to be the side with brick). The cost equation simplifies to: </span>
<span>C = 10x + 15y </span>
<span>Replace y in the cost equation with 940/x: </span>
<span>C = 10x + 15(940/x) </span>
<span>C = 10x + 14100/x <---this is the equation you need to minimize. </span>
<span>C' = 10 - 14100/x^2 </span>
<span>10 - 14100/x^2 = 0 </span>
<span>14100/x^2 = 10 </span>
<span>x^2 = 14100/10 = 1410 </span>
<span>x = sqrt(1410) = 37.55 </span>
<span>y = 25.03 <---this is the length of the brick fence.</span>
Answer:
m^20n^4/p^4q^8
Step-by-step explanation:
Given the expression (m^5n/pq^2)4
This can be written as;
(m^5n/pq^2)4
= (m^5)^4n^4/p^4(q^2)^4
= m^20n^4/p^4q^8
Hence the equivalent expression is m^20n^4/p^4q^8
In the attachment you can find answer to your question. I have drawn 8
lines between 1'' and 3'', measured each of them to the nearest
fourth inch and presented result on a line plot.
5-2x+-4x-7
5+2x=-7
2x=-12x
x=-6