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marusya05 [52]
3 years ago
6

A county is in the shape of a rectangle that is 40 miles by 30 miles and has a population of 50,000. What is the average number

of people living on each square mile of the county? Round your answer to the nearest whole number. 42 357 31 56
Mathematics
2 answers:
vaieri [72.5K]3 years ago
6 0

Answer:

The answer is 42

Step-by-step explanation:

I might be doing this wrong, but if we multiply 40 by 30 to find the total area of the country (1,200 square miles), we can divide the total population (50,000) by each answer choice to find which answer is correct; 50,000/42 is equal to 1,190, the closest product to 1,200. I claim to have possibly done this wrong, but 42 was the correct answer I received on the quiz -- hope I helped!

nata0808 [166]3 years ago
6 0

Answer:

42

Step-by-step explanation:

I took the test and got it correct.

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1. The manager of FrozonAir Refrigerator factory notices that on Monday it cost the company a total of $25,000 to build 30 refri
Vinvika [58]

Answer:

The fixed costs per day for the factory is $10,000 and marginal cost of one refrigerator for $500

Step-by-step explanation:

Let

Cost per refrigerator (marginal cost) = r

Fixed costs per day for the factory = f

Total cost = variable cost + fixed cost

Monday

25,000 = 30r + f

Tuesday

30,000 = 40r + f

Using Monday,

f = 25000 -30r

Substitute f = 25000 - 30r into Tuesday

30,000 = 40r + f

30,000 = 40r + (25,000 -30r)

30,000 = 40r + 25,000 - 30r

Collect like terms

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Divide both sides by 10

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= 500

r = $500

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= 25,000 - 30(500)

= 25,000 - 15,000

= 10,000

f = $10,000

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