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The population of a local species of dragonfly can be found using an infinite geometric series where a1 = 30 and the common ratio is two fifths. Write the sum in sigma notation and calculate the sum that will be the upper limit of this population.

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saadhussain514

Answer:

The answer is the summation of 30 times two fifth of the i minus 1 power from equation equals to 1, the sum is 50.

Explanation:

S = a ÷ (1-r)

S = 30 ÷ (1- (2÷5))

S = 50.

The sum is 50.

By sigma notation verifies 30.

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