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denis23 [38]
3 years ago
15

A population of 12,000 fish has a growth rate of 4% each year. Write a model for the situation. How many years will it take of t

he population to reach 20,000
Mathematics
1 answer:
shepuryov [24]3 years ago
6 0

Answer:

13years

Step-by-step explanation:

Using the formula for calculating the compound interest expressed as;

A =P(1+r)^n

P = 12000

rate r  = 4% = 0.04

Amount after 4 years A = 20,000

Substitute into the formula and solve for p

20,000 = 12,000(1+0.04)^t

20,000/12000 = (1.04)^t

1.67 = (1.04)^t

Take the ln of both side

ln1.67 = ln(1.04)^t

ln1.67 = t ln 1.04

t = ln1.67/ln1.04

t = 0.5108/0.0392

t = 13.03

hence it will take approximately 13years to reach 20,000

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What percentage of a dollar do you have if you have 1 quarter, 1 dime, 1 nickel, and 1 penny?
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The temperature on a winter night was -23 degrees. The temperature rose by 5 degrees when the sun came up. When he sun set again
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4 years ago
A random sample of 2 measurements is taken from the following population of values: 0, 1, 3, 4, 7. What is the probability that
mafiozo [28]

Answer:

1/5

Step-by-step explanation:

Range as a measure of central tendency is the difference between the highest value and the lowest value in a given set of data.

Given the samples 0,1,3,4,7

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The range is gotten by taking the difference of 2 samplesout of 5samples and this can be done in 5C2 ways.

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The expected outcome is therefore 2

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