Math Problem Statement

tentukan jumlah 80 suku pertama deret aritmatika berikut ini: 5+1+8+5+11+9, dengan cakaran dan mudah di pahami

Solution

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Math Problem Analysis

Mathematical Concepts

Arithmetic Sequence
Sum of Arithmetic Series

Formulas

S_n = n/2 * (2a + (n-1)d)

Theorems

Arithmetic sequence formula

Suitable Grade Level

Grades 7-9