Ask Question
Today, 02:56

Find the sum of the first 20 terms of the arithmetic sequence 4, 10, 16, 22 ...

+4
Answers (1)
  1. Today, 04:01
    0
    n = 20

    d = 6

    a = 4

    L = a + (n - 1) * d

    L = 4 + (20 - 1) * 6

    L = 4 + 19*6

    L = 118

    Sum = (a + L) * n/2

    Sum = (4 + 118) * 20/2

    Sum = 122 * 10

    Sum = 1220
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Find the sum of the first 20 terms of the arithmetic sequence 4, 10, 16, 22 ... ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers