Respuesta :
The sum of the first thirteen terms of the geometric series is -7971615.
What is Geometric series?
This is the sum of an infinite number of terms that has a constant ratio between successive terms.
To calculate the sum of the first thirteen terms of the geometric series, we use the formula below.
Formula:
- S₁₃ = a(rⁿ-1)/(r-1).............. Equation 1
Where:
- S₁₃ = Sum of the first thirteen terms of the geometric series.
- a = First term of the series
- r = Common ratio
Given:
- a = -10
- r = 3
- n = 13
Substitute these values into equation 1
- S₁₃ = -10(3¹³-1)/(3-1)
- S₁₃ = -7971615
Hence, the sum of the first thirteen terms of the geometric series is -7971615.
Learn more about geometric series here: https://brainly.com/question/24643676
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