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Allushta [10]
3 years ago
12

Solve each inequality and give your answers in interval notation:

Mathematics
1 answer:
Aleksandr [31]3 years ago
5 0

Answer: for |9x – 11 < 4

7/9<x<5/3

Step-by-step explanation:

interval notation:

(7/9 , 5/3)

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Answer:

a. Average cost equation

\bar c=0.02Q+0.65+250Q^{-1}

b. Q = 112 units

c. Average cost (Q = 112 units) = GHS 5.12

d. Usually, the actual production capacity.

Step-by-step explanation:

We will use $ as the currency symbol for GHS.

a) We have:

- Variable costs: 0.65Q

- Fixed costs: 250

- Special costs: 0.02Q^2

Then we can write the total cost equation as:

C(Q)=0.65Q+250+0.02Q^2

The average cost function can be calculated dividing the total cost equation by Q. Then, we have:

\bar c=\dfrac{C(Q)}{Q}=\dfrac{0.02Q^2+0.65Q+250}{Q}=0.02Q+0.65+250Q^{-1}

b) The output level that minimize the average cost can be calculated deriving the average cost equation and making it equal to zero:

\dfrac{d\bar c}{dQ}=0.02+(-1)250Q^{-2}=0.02-250Q^{-2}=0\\\\\\\dfrac{250}{Q^2}=0.02\\\\\\Q^2=250/0.02=12,500\\\\Q=\sqrt{12,500}\approx 112

The output level that minimizes cost is Q=112 units.

c. The average cost of production for the output level of 112 is:

\bar c=0.02Q+0.65+250Q^{-1}\\\\\bar c(112)=0.02*112+0.65+250/112\\\\\bar c(112)=2.24+0.65+2.23\\\\\bar c(112)=5.12

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