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docker41 [41]
2 years ago
7

There are 20 small tropical fish swimming in a 55-gallon aquarium. What is the population density?

Mathematics
1 answer:
umka21 [38]2 years ago
5 0

Answer:

The population density is 0.364 fish per gallon.

Step-by-step explanation:

The population density can be defined as the number of individuals (in this case, small tropical fish) per unit of area or volume. In this case, the volume of the aquarium (55 gallon).

The density can be calculated then as:

d=\dfrac{P}{V}=\dfrac{20\;\text{fish}}{55\;\text{gal}}\approx0.364\dfrac{\text{fish}}{\text{gal}}

The population density is 0.364 fish per gallon.

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jarptica [38.1K]

Answer:

x = 17

y = 8

QPR = 35º

QRP = 60º

Step-by-step explanation:

2x + 1 = x + 18

Subtract x from both sides

x + 1 = 18

Subtract 1 from both sides

x = 17

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QPR = 2(17) + 1

QPR = 35º

-------------------------------

8y - 4 = 4y + 28

Subtract 4y from both sides

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Add 4 to both sides

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3 years ago
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3 years ago
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kiruha [24]

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Gnom [1K]

Answer:

y = \frac{1}{4}x - 5

Step-by-step explanation:

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Given :

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