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Karo-lina-s [1.5K]
4 years ago
14

If you live in a rectangular city that is 1 mile along the southern border and contains 1000 people, what is the density of peop

le in the city?
Mathematics
1 answer:
Murljashka [212]4 years ago
7 0
Rectangle is twice as long as it is wide

If the length is 1 mile then the width is .5 mile

Area = length x width

 = 1 * .5 = .5

Area = .5 square miles

Put population density in the format of 1 square mile


So if there is 1000 people per .5 square miles then there is 2000 people per square mile.


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I don't quite understand the LCD and the unlike denominators properly. May someone explain it, please.
Whitepunk [10]

Hey!

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LCD stands for Lowest Common Denominator.

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Explanation:

So let's say we have the equation 1/9 * 16/27

We want to find the LCD of both fractions. To find the LCD of both fractions find a the lowest common denominator in both fractions.

In this equation the lowest common denominator is 27 because 9 can go in 27 and 27 can go into itself. Se basically 27 is the lowest possibly common denominator both fractions can get to.

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Hope This Helped! Good Luck ;)

5 0
4 years ago
Can someone complete the square
pshichka [43]
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divide it by 2

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now square this number

(-3)^2 = 9

this is what you need for the "c" value

there is only a 5 for the c value so add 4 to both sides of the equation. ( +4 = +4)

y +4 = x^2 -6x +5 +4
y +4 = x^2 -6x +9
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vertex ( 3, -4) upwards facing like a bowl, because the "a" value is positive. So the vertex is the minimum, lowest point on the graph.


7 0
4 years ago
Which of the following is how we find slope from a graph?
stellarik [79]

Answer:

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Step-by-step explanation:

We can find the slope by

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3 0
4 years ago
Read 2 more answers
A professor wants to know how undergraduate students at X University feel about food services on campus, in general. She obtains
hammer [34]

Answer:

15000

Step-by-step explanation:

Given that a professor wants to know how undergraduate students at X University feel about food services on campus, in general. She obtains a list of email addresses of all 15,000 registered undergraduates from the registrar’s office and mails a questionnaire to 300 students selected at random.

Only 150 questionnaires are returned.

So the sample size changed to 150. But population is the number of registered undergraduates which do not change.

Population size = 15000

8 0
3 years ago
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18 mph. Answer B is the correct answer
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3 years ago
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