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Verdich [7]
3 years ago
7

Write an addition or subtraction fact.then write a strategy you could use to add or subtract.

Mathematics
1 answer:
elena-s [515]3 years ago
8 0
30+8=38
0+8=8
3+nothing=3
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The total cost for a production process is equal to $1,000 plus two times the number of units produced. The mean and variance fo
Andrej [43]

Answer:

\mu_p=2000\\\\\sigma_p^2=3600

Step-by-step explanation:

Let X be the number of units produced, and P be the cost of production.

#Given that \mu_x=500, \sigma_x^2=900

Cost of production can be calculated as:

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#Mean of the total cost is calculated as;

\mu_p=1000+2\mu_x\\\\=1000+2(500)\\\\=2000

Hence, the mean cost of production is $2,000

#Variance of the total cost is calculated as;

\sigma_p^2=2^2\sigma_x^2\\\\=2^\times 900\\\\=3600

Hence, the variancecost of production is $3,600

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Alenkasestr [34]

Answer:

x^2 +x(7+3) +21

x^2 +7x + 3x +21

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(x+7) (x+3)

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