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gagedugan2019
21.01.2020 •
Mathematics
The average cost per hour in dollars of producing x riding lawn mowers is given by the following.
upper c overbar left parenthesis x right parenthesis equals 0.5 x squared plus 23 x minus 216 plus startfraction 2600 over x endfractionc(x)=0.5x2+23x−216+
2600
x
(a) use a graphing utility to determine the number of riding lawn mowers to produce in
order to minimize average cost.
(b) what is the minimum average cost?
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Ответ:
I included only the region where the solution is.
I marked with dotted lines the minimum point and used arrows to indicate its components.
a) the minimum average cost is obtained when you produce 9 riding lawn mowers.
You can check it if you use the formula with three values of x: x =8, x = 9 and x = 10.
9
That coordinate is indicated with an arrow.
b) The minimum average cost is obtained when you use the formula for the average cost with x = 9:
C(x) = 0.5*(9)^2 + 23(9) - 216 + 2600/x = 320.39
320.39
Ответ:
36
Step-by-step explanation:
9/10 multiplied by 40= 36 words