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Bingel [31]
4 years ago
5

-7x+y=-19 -2x+3y=-19

Mathematics
2 answers:
max2010maxim [7]4 years ago
6 0
-7-2=-9
y+3y=4y

-9x+4y=-19
sveta [45]4 years ago
5 0
Y=7x-19

-2x+3(7x-19)=-19
-2x+21x-57=-19
19x-57=-19
19x=38
x=2

-7(2) + y = -19
-14 + y = -19
y=-5
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y=mx+c

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Hatshy [7]

Answer:

Greatest population density: Denmark

Smallest population density: The U.S.

Step-by-step explanation:

Population density = population / area

So let's find the population density of each country

For U.S

Population: 272,648,000

Area: 9,364,520 sq km

Population density: 272,648,000/9,364,520=29.1 ( rounded to the nearest tenth )

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For Denmark

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Area: 42,077

Population density: 5,248,000/42,077=124.7 ( rounded to the nearest tenth )

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For Ghana

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Area: 237,533

Population density: 18,339,000/237,533=77.2 ( rounded to the nearest tenth ).

So the population density of Ghana is 77.2 people per sq km

Now that we have calculated the population density of each country let's look back at the question

Which country has the greatest population density? Which country has the least?

Looking at the population densities we can conclude that Denmark has the largest population density at 124.7 people per sq km and the U.S. has the smallest population density at 29.1 people per sq km

3 0
3 years ago
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