2 years ago

The frog population on an island is declining at a rate of 3.2% per year. The population was 4500 in the year 2009.

1 answer:

3 0

Um maybe 5.2 it depends on the frog and how many they eat to reproduce faster

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kipiarov [429]

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$\frac{7(a-1)}{(a+2)(a-5)}$

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To solve this operation we need to find the common multiple of both denominators and solve for a.

$\frac{3}{a+2} + \frac{4}{a-5} =\frac{3(a-5)+4(a+2)}{(a+2)(a-5)} =\frac{3a-15+4a+8}{(a+2)(a-5)} =\frac{7a-7}{(a+2)(a-5)} =\frac{7(a-1)}{(a+2)(a-5)}$

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