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NatalieLove

  • 4 years ago

What is the sum of the arithmetic sequence 8, 15, 22 …, if there are 26 terms?

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  1. Siddharth18
    • 4 years ago
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    well first find the common difference

  2. kantalope
    • 4 years ago
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    n+7

  3. Siddharth18
    • 4 years ago
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    subtract any consequetive terms.that gives you the common difference

  4. Siddharth18
    • 4 years ago
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    for example if a,b and c are in arithmetic progression then common difference is b-a which also equals c-a now tell what's the cd for the given sequence?

  5. Siddharth18
    • 4 years ago
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    r u there?

  6. NatalieLove
    • 4 years ago
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    yes

  7. NatalieLove
    • 4 years ago
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    i dont get it

  8. Siddharth18
    • 4 years ago
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    do you know what common difference in an arithmetic progression means?

  9. NatalieLove
    • 4 years ago
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    no

  10. Siddharth18
    • 4 years ago
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    http://www.math10.com/en/algebra/arithmetic-progression.html

  11. NatalieLove
    • 4 years ago
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    ok

  12. Siddharth18
    • 4 years ago
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    can you it solve yourself now?

  13. NatalieLove
    • 4 years ago
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    not really

  14. NatalieLove
    • 4 years ago
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    im gonna guess it

  15. Siddharth18
    • 4 years ago
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    you attemptin sum kinda test?

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